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2 tháng 8 2017

Đáp án C.

- to pay for sth by installments: trả tiền mua cái gì nhưng trả bằng nhiều lần.

Các lựa chọn khác sai vì không kếp họp với giới từ “by”:

A. to pay in cash: trả bằng tiền mặt.

Ex: Will you pay by credit card or in cash?

B. to buy sth on credit: mua chịu.

Ex: We bought the dishwasher on credit.

D. hire purchase (n) = installment plan: phương thức mua trả góp nhưng chỉ khi nào trả hết được tiền thì vật đã mua mới chính thức thuộc sở hữu của bạn.

Ex: We're buying a new cooker on hire purchase.

Read the following passage and mark the letter A,B,C or D on your answer sheet to indicate the correct answer to each of the questionsSmart cards and mobile phones are becoming an increasingly popular way to make all sorts of payments. Even now, in Japan thousands of transactions, from paying rail tickets to picking up the groceries, take place every day with customers passing their handsets across a small flat-screen device. And predictions in the world of finance reckon that payments using...
Đọc tiếp

Read the following passage and mark the letter A,B,C or D on your answer sheet to indicate the correct answer to each of the questions

Smart cards and mobile phones are becoming an increasingly popular way to make all sorts of payments. Even now, in Japan thousands of transactions, from paying rail tickets to picking up the groceries, take place every day with customers passing their handsets across a small flat-screen device. And predictions in the world of finance reckon that payments using mobile phones will have risen to more than $50 billion in the very near future.

What's the appeal of e-cash? Compared to cheques or credit cards, it offers the speed of cash, but more so. It takes just one tenth of a second to complete most transactions and as no change is required, errors in counting are eliminated. Fraud and theft are also reduced and for the retailer, it reduces the cost of handling money. Sony's vision of having a chip embedded in computers. TVs and games consoles means that films, music and games can be paid for easily and without having to input credit card details.

And what about the future of the banks? Within their grip on the market, banks and credit-card firms want to be in a position to collect most of the fees from the users of mobile and contactless-payment systems. But the new system could prove to be a "disruptive technology" as far as the banks are concerned. If payments for a few coffees, a train ticket and a newspaper are made every day by a commuter with a mobile, this will not appear on their monthly credit card statements but on their mobile phone statements. And having spent fortunes on branding, credit-card companies and banks do not want to see other payment systems gaining popularity. It's too early to say whether banks will miss out and if so, by how much. However, quite a few American bankers are optimistic They feel there is reason to he suspicious of those who predict that high-street banks may be a thing of the past. They point out that Internet banking did not result in the closure of their high-street branches as was predicted. On the contrary, more Americans than ever are using local branches. So, whether we'll become a totally cash-free society remains open to contention.

Which of the following is NOT true about the strong point of e-cash?

A. faster speed

B. no fraud

C. fewer mistakes 

D. reduced cost

1
23 tháng 5 2017

Đáp án B

Điều nào sau đây là không đúng sự thật về các điểm mạnh của e-tiền mặt?

A. tốc độ nhanh hơn   B. không có gian lận   C. ít sai lầm hơn   D. giảm chi phí

Thông tin ở đoạn số 2: Fraud and theft are also reduced and for the retailer, it reduces the cost of handling money.

Gian lận và trộm cắp chỉ được reduced (giảm) chứ không phải là hoàn toàn không có

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.        Bitcoins are a form of virtual currency. In other words, they are a type of money that does not exist in the actual world. However, they can be used to purchase actual products and services from real companies.        The bitcoin system was created in 2009 by an enigmatic person named Satoshi Nakamoto. In fact, no one is sure if Satoshi...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.

        Bitcoins are a form of virtual currency. In other words, they are a type of money that does not exist in the actual world. However, they can be used to purchase actual products and services from real companies.

        The bitcoin system was created in 2009 by an enigmatic person named Satoshi Nakamoto. In fact, no one is sure if Satoshi Nakamoto is an actual person or a group of people. Bitcoins are designed to serve as an alternative to national currencies, such as dollars and euros, They can be used to pay for things instead of cash or credit cards. When bitcoins are transferred from a buyer to a seller, the transaction is recorded in a public database.

        Governments are concerned that bitcoins can easily be stolen by hackers. It has dawned on them that they might be used for illegal purposes. For example, stolen goods could be purchased without the government's knowledge. Although more and more companies are beginning to accept bitcoins, the percentage of purchases made using bitcoins is minuscule compared to other online payment methods, such as credit cards. Instead, many bitcoin owners simply keep them as an investment since more valuable in the future.

        This may or may not be a wise approach. Currently, the value of bitcoins is fluctuating wildly, especially when compared to highly stable national currencies, Bitcoin Investors are gambling on the hope that as this high-tech money becomes more widely accepted, its value will soar.

(Adapted from: https://www.digitalcommerce360.com/)

What is the passage mainly about?

A. A new kind of currency in the virtual world

B. A way of doing business in the virtual world

C. An alternative to bitcoins created by Nakamoto

D. The future of bitcoins in the real world.

1
19 tháng 3 2019

A

Kiến thức: Đọc hiểu

Giải thích:

Ý chính của bài là gì?

A. Một loại tiền tệ mới trong thế giới ảo           B. Một cách kinh doanh trong thế giới ảo

C. Một thay thế cho bitcoin được tạo bởi Nakamoto                         D. Tương lai của bitcoin trong thế giới thực.

Bài đọc nói về Bitcoin, một loại tiền ảo

Chọn A

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.        Bitcoins are a form of virtual currency. In other words, they are a type of money that does not exist in the actual world. However, they can be used to purchase actual products and services from real companies.        The bitcoin system was created in 2009 by an enigmatic person named Satoshi Nakamoto. In fact, no one is sure if Satoshi...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.

        Bitcoins are a form of virtual currency. In other words, they are a type of money that does not exist in the actual world. However, they can be used to purchase actual products and services from real companies.

        The bitcoin system was created in 2009 by an enigmatic person named Satoshi Nakamoto. In fact, no one is sure if Satoshi Nakamoto is an actual person or a group of people. Bitcoins are designed to serve as an alternative to national currencies, such as dollars and euros, They can be used to pay for things instead of cash or credit cards. When bitcoins are transferred from a buyer to a seller, the transaction is recorded in a public database.

        Governments are concerned that bitcoins can easily be stolen by hackers. It has dawned on them that they might be used for illegal purposes. For example, stolen goods could be purchased without the government's knowledge. Although more and more companies are beginning to accept bitcoins, the percentage of purchases made using bitcoins is minuscule compared to other online payment methods, such as credit cards. Instead, many bitcoin owners simply keep them as an investment since more valuable in the future.

        This may or may not be a wise approach. Currently, the value of bitcoins is fluctuating wildly, especially when compared to highly stable national currencies, Bitcoin Investors are gambling on the hope that as this high-tech money becomes more widely accepted, its value will soar.

(Adapted from: https://www.digitalcommerce360.com/)

What is the passage mainly about?

A. A new kind of currency in the virtual world

B. A way of doing business in the virtual world

C. An alternative to bitcoins created by Nakamoto

D. The future of bitcoins in the real world.

1
29 tháng 8 2018

A

Kiến thức: Đọc hiểu

Giải thích:

Ý chính của bài là gì?

A. Một loại tiền tệ mới trong thế giới ảo           B. Một cách kinh doanh trong thế giới ảo

C. Một thay thế cho bitcoin được tạo bởi Nakamoto                         D. Tương lai của bitcoin trong thế giới thực.

Bài đọc nói về Bitcoin, một loại tiền ảo

Chọn A

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.        Bitcoins are a form of virtual currency. In other words, they are a type of money that does not exist in the actual world. However, they can be used to purchase actual products and services from real companies.        The bitcoin system was created in 2009 by an enigmatic person named Satoshi Nakamoto. In fact, no one is sure if Satoshi...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.

        Bitcoins are a form of virtual currency. In other words, they are a type of money that does not exist in the actual world. However, they can be used to purchase actual products and services from real companies.

        The bitcoin system was created in 2009 by an enigmatic person named Satoshi Nakamoto. In fact, no one is sure if Satoshi Nakamoto is an actual person or a group of people. Bitcoins are designed to serve as an alternative to national currencies, such as dollars and euros, They can be used to pay for things instead of cash or credit cards. When bitcoins are transferred from a buyer to a seller, the transaction is recorded in a public database.

        Governments are concerned that bitcoins can easily be stolen by hackers. It has dawned on them that they might be used for illegal purposes. For example, stolen goods could be purchased without the government's knowledge. Although more and more companies are beginning to accept bitcoins, the percentage of purchases made using bitcoins is minuscule compared to other online payment methods, such as credit cards. Instead, many bitcoin owners simply keep them as an investment since more valuable in the future.

        This may or may not be a wise approach. Currently, the value of bitcoins is fluctuating wildly, especially when compared to highly stable national currencies, Bitcoin Investors are gambling on the hope that as this high-tech money becomes more widely accepted, its value will soar.

(Adapted from: https://www.digitalcommerce360.com/)

Which of the following is defined in the passage?

A. Bitcoins

B. Transactions

C. Credit cards

D. Public Database

1
15 tháng 5 2019

A

Kiến thức: Đọc hiểu

Giải thích:

Điều nào sau đây được định nghĩa trong đoạn văn?

A. Bitcoin                    B. Giao dịch               C. Thẻ tín dụng          D. Cơ sở dữ liệu công cộng

Thông tin: Bitcoins are a form of virtual currency. In other words, they are a type of money that does not exist in the actual world.

Tạm dịch: Bitcoin là một dạng tiền ảo. Nói cách khác, chúng là một loại tiền không tồn tại trong thế giới thực.

Chọn A

Dịch bài đọc:

Bitcoin là một dạng tiền ảo. Nói cách khác, chúng là một loại tiền không tồn tại trong thế giới thực. Tuy nhiên, chúng có thể được sử dụng để mua các sản phẩm và dịch vụ thực tế từ các công ty thật.

Hệ thống bitcoin được tạo ra vào năm 2009 bởi một người bí ẩn tên Satoshi Nakamoto. Trên thực tế, không ai chắc chắn Satoshi Nakamoto là một người thật hay một nhóm người. Bitcoin được thiết kế để phục vụ thay thế cho các loại tiền tệ quốc gia, chẳng hạn như đô la và euro. Chúng có thể được sử dụng để thanh toán trực tuyến thay cho tiền mặt hoặc thẻ tín dụng. Khi bitcoin được chuyển từ người mua sang người bán, giao dịch được ghi lại trong cơ sở dữ liệu công khai.

Chính phủ lo ngại rằng bitcoin có thể dễ dàng bị đánh cắp bởi tin tặc. Họ nhận ra rằng chúng có thể được sử dụng cho mục đích bất hợp pháp. Ví dụ, hàng hóa bị đánh cắp có thể được mua mà chính phủ không biết. Mặc dù ngày càng có nhiều công ty bắt đầu chấp nhận bitcoin, nhưng tỷ lệ mua hàng được thực hiện bằng bitcoin là rất nhỏ so với các phương thức thanh toán trực tuyến khác, chẳng hạn như thẻ tín dụng. Thay vào đó, nhiều chủ sở hữu bitcoin chỉ đơn giản giữ chúng như một khoản đầu tư vì có giá trị hơn trong tương lai. Điều này có thể hoặc không thể là một cách tiếp cận khôn ngoan. Hiện tại, giá trị của bitcoin đang biến động mạnh mẽ, đặc biệt khi so sánh với các loại tiền tệ quốc gia có tính ổn định cao, các nhà đầu tư Bitcoin đang đánh bạc với hy vọng rằng khi loại tiền công nghệ cao này được chấp nhận rộng rãi hơn, giá trị của nó sẽ tăng cao

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.        Bitcoins are a form of virtual currency. In other words, they are a type of money that does not exist in the actual world. However, they can be used to purchase actual products and services from real companies.        The bitcoin system was created in 2009 by an enigmatic person named Satoshi Nakamoto. In fact, no one is sure if Satoshi...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.

        Bitcoins are a form of virtual currency. In other words, they are a type of money that does not exist in the actual world. However, they can be used to purchase actual products and services from real companies.

        The bitcoin system was created in 2009 by an enigmatic person named Satoshi Nakamoto. In fact, no one is sure if Satoshi Nakamoto is an actual person or a group of people. Bitcoins are designed to serve as an alternative to national currencies, such as dollars and euros, They can be used to pay for things instead of cash or credit cards. When bitcoins are transferred from a buyer to a seller, the transaction is recorded in a public database.

        Governments are concerned that bitcoins can easily be stolen by hackers. It has dawned on them that they might be used for illegal purposes. For example, stolen goods could be purchased without the government's knowledge. Although more and more companies are beginning to accept bitcoins, the percentage of purchases made using bitcoins is minuscule compared to other online payment methods, such as credit cards. Instead, many bitcoin owners simply keep them as an investment since more valuable in the future.

        This may or may not be a wise approach. Currently, the value of bitcoins is fluctuating wildly, especially when compared to highly stable national currencies, Bitcoin Investors are gambling on the hope that as this high-tech money becomes more widely accepted, its value will soar.

(Adapted from: https://www.digitalcommerce360.com/)

What is the passage mainly about?

A. A new kind of currency in the virtual world

B. A way of doing business in the virtual world

C. An alternative to bitcoins created by Nakamoto

D. The future of bitcoins in the real world.

1
1 tháng 1 2018

A

Kiến thức: Đọc hiểu

Giải thích:

Ý chính của bài là gì?

A. Một loại tiền tệ mới trong thế giới ảo           B. Một cách kinh doanh trong thế giới ảo

C. Một thay thế cho bitcoin được tạo bởi Nakamoto                         D. Tương lai của bitcoin trong thế giới thực.

Bài đọc nói về Bitcoin, một loại tiền ảo

Chọn A

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.        Bitcoins are a form of virtual currency. In other words, they are a type of money that does not exist in the actual world. However, they can be used to purchase actual products and services from real companies.        The bitcoin system was created in 2009 by an enigmatic person named Satoshi Nakamoto. In fact, no one is sure if Satoshi...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.

        Bitcoins are a form of virtual currency. In other words, they are a type of money that does not exist in the actual world. However, they can be used to purchase actual products and services from real companies.

        The bitcoin system was created in 2009 by an enigmatic person named Satoshi Nakamoto. In fact, no one is sure if Satoshi Nakamoto is an actual person or a group of people. Bitcoins are designed to serve as an alternative to national currencies, such as dollars and euros, They can be used to pay for things instead of cash or credit cards. When bitcoins are transferred from a buyer to a seller, the transaction is recorded in a public database.

        Governments are concerned that bitcoins can easily be stolen by hackers. It has dawned on them that they might be used for illegal purposes. For example, stolen goods could be purchased without the government's knowledge. Although more and more companies are beginning to accept bitcoins, the percentage of purchases made using bitcoins is minuscule compared to other online payment methods, such as credit cards. Instead, many bitcoin owners simply keep them as an investment since more valuable in the future.

        This may or may not be a wise approach. Currently, the value of bitcoins is fluctuating wildly, especially when compared to highly stable national currencies, Bitcoin Investors are gambling on the hope that as this high-tech money becomes more widely accepted, its value will soar.

(Adapted from: https://www.digitalcommerce360.com/)

The word “minuscule” is closest in meaning to

A. considerable

B. small

C. minimal

D. increasing

1
14 tháng 7 2017

B

Kiến thức: Đọc hiểu

Giải thích:

Từ “minuscule” có nghĩa gần nhất với

A.đáng kể                    B. nhỏ                        C. tối thiểu                 D. tăng

 “minuscule” = “small”: nhỏ

Thông tin: Although more and more companies are beginning to accept bitcoins, the percentage of purchases made using bitcoins is minuscule compared to other online payment methods, such as credit cards.

Tạm dịch: Mặc dù ngày càng có nhiều công ty bắt đầu chấp nhận bitcoin, nhưng tỷ lệ mua hàng được thực

hiện bằng bitcoin là rất nhỏ so với các phương thức thanh toán trực tuyến khác, chẳng hạn như thẻ tín dụng.

Chọn B

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.        Bitcoins are a form of virtual currency. In other words, they are a type of money that does not exist in the actual world. However, they can be used to purchase actual products and services from real companies.        The bitcoin system was created in 2009 by an enigmatic person named Satoshi Nakamoto. In fact, no one is sure if Satoshi...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.

        Bitcoins are a form of virtual currency. In other words, they are a type of money that does not exist in the actual world. However, they can be used to purchase actual products and services from real companies.

        The bitcoin system was created in 2009 by an enigmatic person named Satoshi Nakamoto. In fact, no one is sure if Satoshi Nakamoto is an actual person or a group of people. Bitcoins are designed to serve as an alternative to national currencies, such as dollars and euros, They can be used to pay for things instead of cash or credit cards. When bitcoins are transferred from a buyer to a seller, the transaction is recorded in a public database.

        Governments are concerned that bitcoins can easily be stolen by hackers. It has dawned on them that they might be used for illegal purposes. For example, stolen goods could be purchased without the government's knowledge. Although more and more companies are beginning to accept bitcoins, the percentage of purchases made using bitcoins is minuscule compared to other online payment methods, such as credit cards. Instead, many bitcoin owners simply keep them as an investment since more valuable in the future.

        This may or may not be a wise approach. Currently, the value of bitcoins is fluctuating wildly, especially when compared to highly stable national currencies, Bitcoin Investors are gambling on the hope that as this high-tech money becomes more widely accepted, its value will soar.

(Adapted from: https://www.digitalcommerce360.com/)

What is the passage mainly about?

A. A new kind of currency in the virtual world

B. A way of doing business in the virtual world

C. An alternative to bitcoins created by Nakamoto

D. The future of bitcoins in the real world.

1
5 tháng 12 2017

A

Kiến thức: Đọc hiểu

Giải thích:

Ý chính của bài là gì?

A. Một loại tiền tệ mới trong thế giới ảo           B. Một cách kinh doanh trong thế giới ảo

C. Một thay thế cho bitcoin được tạo bởi Nakamoto                         D. Tương lai của bitcoin trong thế giới thực.

Bài đọc nói về Bitcoin, một loại tiền ảo

Chọn A

Read the following passage and mark the letter A,B,C or D on your answer sheet to indicate the correct answer to each of the questionsSmart cards and mobile phones are becoming an increasingly popular way to make all sorts of payments. Even now, in Japan thousands of transactions, from paying rail tickets to picking up the groceries, take place every day with customers passing their handsets across a small flat-screen device. And predictions in the world of finance reckon that payments using...
Đọc tiếp

Read the following passage and mark the letter A,B,C or D on your answer sheet to indicate the correct answer to each of the questions

Smart cards and mobile phones are becoming an increasingly popular way to make all sorts of payments. Even now, in Japan thousands of transactions, from paying rail tickets to picking up the groceries, take place every day with customers passing their handsets across a small flat-screen device. And predictions in the world of finance reckon that payments using mobile phones will have risen to more than $50 billion in the very near future.

What's the appeal of e-cash? Compared to cheques or credit cards, it offers the speed of cash, but more so. It takes just one tenth of a second to complete most transactions and as no change is required, errors in counting are eliminated. Fraud and theft are also reduced and for the retailer, it reduces the cost of handling money. Sony's vision of having a chip embedded in computers. TVs and games consoles means that films, music and games can be paid for easily and without having to input credit card details.

And what about the future of the banks? Within their grip on the market, banks and credit-card firms want to be in a position to collect most of the fees from the users of mobile and contactless-payment systems. But the new system could prove to be a "disruptive technology" as far as the banks are concerned. If payments for a few coffees, a train ticket and a newspaper are made every day by a commuter with a mobile, this will not appear on their monthly credit card statements but on their mobile phone statements. And having spent fortunes on branding, credit-card companies and banks do not want to see other payment systems gaining popularity. It's too early to say whether banks will miss out and if so, by how much. However, quite a few American bankers are optimistic They feel there is reason to he suspicious of those who predict that high-street banks may be a thing of the past. They point out that Internet banking did not result in the closure of their high-street branches as was predicted. On the contrary, more Americans than ever are using local branches. So, whether we'll become a totally cash-free society remains open to contention.

How does the writer seem to feel about the future of banks?

A. neutral

B. uncertain 

C. optimistic

D. pessimistic

1
27 tháng 11 2018

Đáp án B

nhà văn có vẻ như cảm nhận như thế nào về tương lai của các ngân hàng?

A. trung lập     B. không chắc chắn   C. lạc quan     D. bi quan

Thông tin ở câu cuối cùng của bài:

So, whether we'll become a totally cash-free society remains open to contention.

Vì vậy, chúng ta sẽ trở thành một xã hội hoàn toàn bằng tiền mặt miễn phí  hay không vẫn còn tranh cãi. => không chắc chắn

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.        Bitcoins are a form of virtual currency. In other words, they are a type of money that does not exist in the actual world. However, they can be used to purchase actual products and services from real companies.        The bitcoin system was created in 2009 by an enigmatic person named Satoshi Nakamoto. In fact, no one is sure if Satoshi...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.

        Bitcoins are a form of virtual currency. In other words, they are a type of money that does not exist in the actual world. However, they can be used to purchase actual products and services from real companies.

        The bitcoin system was created in 2009 by an enigmatic person named Satoshi Nakamoto. In fact, no one is sure if Satoshi Nakamoto is an actual person or a group of people. Bitcoins are designed to serve as an alternative to national currencies, such as dollars and euros, They can be used to pay for things instead of cash or credit cards. When bitcoins are transferred from a buyer to a seller, the transaction is recorded in a public database.

        Governments are concerned that bitcoins can easily be stolen by hackers. It has dawned on them that they might be used for illegal purposes. For example, stolen goods could be purchased without the government's knowledge. Although more and more companies are beginning to accept bitcoins, the percentage of purchases made using bitcoins is minuscule compared to other online payment methods, such as credit cards. Instead, many bitcoin owners simply keep them as an investment since more valuable in the future.

        This may or may not be a wise approach. Currently, the value of bitcoins is fluctuating wildly, especially when compared to highly stable national currencies, Bitcoin Investors are gambling on the hope that as this high-tech money becomes more widely accepted, its value will soar.

(Adapted from: https://www.digitalcommerce360.com/)

Why are bitcoins of great concern to governments?

A. Because the value of bitcoins is fluctuating wildly.

B. Because bitcoins will eventually replace national currencies.

C. Because bitcoins may be used in illegal transactions.

D. Because most of bitcoin owners are hackers.

1
6 tháng 11 2018

C

Kiến thức: Đọc hiểu

Giải thích:

Tại sao bitcoin là mối quan tâm lớn đối với chính phủ?

A. Vì giá trị của bitcoin đang dao động mạnh.

B. Vì bitcoin cuối cùng sẽ thay thế tiền tệ quốc gia.

C. Vì bitcoin có thể được sử dụng trong các giao dịch bất hợp pháp.

D. Bởi vì hầu hết chủ sở hữu bitcoin là tin tặc.

Thông tin: Governments are concerned that bitcoins can easily be stolen by hackers. It has dawned on them that they might be used for illegal purposes. For example, stolen goods could be purchased without the government's knowledge.

Tạm dịch: Chính phủ lo ngại rằng bitcoin có thể dễ dàng bị đánh cắp bởi tin tặc. Họ nhận ra rằng chúng có thể được sử dụng cho mục đích bất hợp pháp. Ví dụ, hàng hóa bị đánh cắp có thể được mua mà chính phủ không biết.

Chọn C