K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

practice1Insert the comma and suitable coordinators (for, and, nor, but, or, yet, so) that logically connects the two or more thoughts in each sentence 1. Nowadays, computer are widely used in scientific research, and (so) it enables us connect with worldwide libraries ..........................................................................2. Airplane had received permission from the owner / they could not take off ..........................................................................3....
Đọc tiếp

practice1
Insert the comma and suitable coordinators (for, and, nor, but, or, yet, so) that logically connects the two or more thoughts in each sentence 
1. Nowadays, computer are widely used in scientific research, and (so) it enables us connect with worldwide libraries 
..........................................................................
2. Airplane had received permission from the owner / they could not take off 
..........................................................................
3. The tendency of this century is global integration, so many schools are starting to emphasize the study of foreign language and informatis more than they did in the past 
..........................................................................
4. many people do not throw rubbish into dustbin along the road, so they do not classify the house-hold waste
..........................................................................
5. television badly affect the watchers health, so scientists and doctors need to diagnose the problem and recommend for treatment 
..........................................................................
6. a nuclear weapon is more dangerous than any other weapon, yet many nation in the world are producing this kind of weapon 
..........................................................................
7. group work teaches students cooperation, and it helps them self-confident in communication ..........................................................................
8. karaoke is an interesting from of entertainment, yet it causes brain damage 
..........................................................................

0
Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best first each of the numbered blanks from 1 to 5.Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________. if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as...
Đọc tiếp

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best first each of the numbered blanks from 1 to 5.

Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________. if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are

caught (3)________. and sold as pets. For many animals and birds the problem is that their habitat - the place

where they live - is disappearing. More land is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them to grow better crops, but these chemicals pollute the environment and (4)________. wildlife. The most successful animals on earth - human beings - will soon be the only ones (5)________., unless we can solve this problem.

Điền vào ô 1

A. threat

B. problem

C. danger

D. vanishing

1
4 tháng 10 2017

C

Kiến thức: Cụm từ, đọc hiểu

Giải thích:

to be in danger: đang gặp nguy hiểm

Các từ còn lại: threat (n): mối đe doạ; problem (n): vấn đề, rắc rối; vanishing (n): sự biến mất

Đáp án:C 

Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question. As computer use becomes more common, the need for security is more important than ever. One of the greatest security threats in the online world is computer hacking. Computer hacking is the unauthorized access to a computer or network of computers. Hackers are people who illegally enter systems. They may alter or delete information, steal private information, or spread viruses that can...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.

As computer use becomes more common, the need for security is more important than ever. One of the greatest security threats in the online world is computer hacking. Computer hacking is the unauthorized access to a computer or network of computers. Hackers are people who illegally enter systems. They may alter or delete information, steal private information, or spread viruses that can damage or destroy files. But how exactly can a hacker get into a system to do these things?

Most hackers use information called protocols that are built into computer software. These protocols allow computers to interact with one another. Protocols are sort of like computer police officers. When a computer connects to another system, the protocols check to see if the access is valid. The protocols can also determine how much information can be shared between the two systems. Hackers can manipulate the protocols to get unlimited access to a computer system.

In fact, just the act of entering a computer network is considered hacking. This is commonly called passive hacking. Passive hackers get a rush from just being able to access a challenging system like a bank or military network. Another kind of hacker tries to do damage to a system. After hacking into systems, these hackers release viruses or alter, delete, or take information. Known as active hackers, they are, by far, the more dangerous of the two.

        The easiest way to protect a system is with a good password, Long and unusual passwords are harder for hackers to guess. For even greater security, some online services now use “password-plus” systems. In this case, users first put in a password and then put in a second code that changes after the user accesses the site. Users either have special cards or devices that show them the new code to use the next time. Even if a hacker steals the password, they won't have the code. Or if the hacker somehow gets the code, they still don't know the password.

The author mentioned in the third paragraph that active hackers are more dangerous because ______.

A. they often get access to important networks like a bank or military.

B. they implant viruses or steal private and other vital information in systems.

C. they always remove all the data in the systems they hack.

D. they can do many harmful things for the whole computer network system.

1
9 tháng 12 2017

Đáp án B

Tác giả đề cập trong đoạn 3 rằng tin tặc chủ động thì nguy hiểm hơn bởi vì __________.

A. chúng thường truy cập vào các mạng lưới quan trọng như ngân hàng hay quân đội.

B. chúng cài virus hay lấy trộm các thông tin cá nhân và thông tin quan trọng khác trong các hệ thống.

C. chúng thường xóa bỏ tất cả dữ liệu của hệ thông chúng xâm nhập.

D. chúng có thể làm nhiều thứ gây hại đến toàn bộ hệ thống mạng lưới máy tính.

Từ khóa: active hackers/ more dangerous

Căn cứ thông tin đoạn 3:

“Another kind of hacker tries to do damage to a system. After hacking into systems, these hackers release viruses or alter, delete, or take information. Known as active hackers, they are, by far, the more dangerous of the two."

(Một loại tin tặc khác cố gắng gây thiệt hại cho hệ thống máy tính mà họ xâm nhập. Sau khi truy cập vào hệ thống, những tin tặc này cấy virus vào hoặc thay đổi, xóa hay lấy trộm thông tin. Chúng được biết đến như là tin tặc chủ động và rõ ràng chúng là loại nguy hiểm hơn trong 2 loại tin tặc).

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best first each of the numbered blanks from 1 to 5.Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________. if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as...
Đọc tiếp

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best first each of the numbered blanks from 1 to 5.

Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________. if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are

caught (3)________. and sold as pets. For many animals and birds the problem is that their habitat - the place

where they live - is disappearing. More land is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them to grow better crops, but these chemicals pollute the environment and (4)________. wildlife. The most successful animals on earth - human beings - will soon be the only ones (5)________., unless we can solve this problem.

Điền vào ô 2

A. disappeared

B. vanished

C. extinct

D. empty

1
10 tháng 8 2018

C

Kiến thức: Từ vựng, đọc hiểu

Giải thích:

disappear (v): biến mất                         vanished (a): đã biến mất, không còn nữa

extinct (a): tuyệt chủng                         \empty (a): trống rỗng

Đáp án:C

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best first each of the numbered blanks from 1 to 5.Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________. if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as...
Đọc tiếp

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best first each of the numbered blanks from 1 to 5.

Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________. if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are

caught (3)________. and sold as pets. For many animals and birds the problem is that their habitat - the place

where they live - is disappearing. More land is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them to grow better crops, but these chemicals pollute the environment and (4)________. wildlife. The most successful animals on earth - human beings - will soon be the only ones (5)________., unless we can solve this problem.

Điền vào ô 4

A. spoil

B. wound

C. wrong

D. harm

1
5 tháng 9 2017

D

Kiến thức: Từ vựng, đọc hiểu

Giải thích:

spoil (v): làm hỏng, làm hư                   wound (v): làm bị thương

wrong (a): sai, nhầm                             harm (v): làm hại, gây tai hại

Đáp án:D

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best first each of the numbered blanks from 1 to 5.Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________. if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as...
Đọc tiếp

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best first each of the numbered blanks from 1 to 5.

Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________. if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are

caught (3)________. and sold as pets. For many animals and birds the problem is that their habitat - the place

where they live - is disappearing. More land is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them to grow better crops, but these chemicals pollute the environment and (4)________. wildlife. The most successful animals on earth - human beings - will soon be the only ones (5)________., unless we can solve this problem.

Điền vào ô 3

A. for life

B. alive

C. lively

D. for living

1
9 tháng 4 2019

B

Kiến thức: Từ vựng, đọc hiểu

Giải thích:

for life: cho cuộc sống, vì cuộc sống     alive (a): sống, còn sống

lively (a): sống động                             for living: cho cuộc sống, để sống

Đáp án:B

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best first each of the numbered blanks from 1 to 5.Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________. if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as...
Đọc tiếp

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best first each of the numbered blanks from 1 to 5.

Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________. if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are

caught (3)________. and sold as pets. For many animals and birds the problem is that their habitat - the place

where they live - is disappearing. More land is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them to grow better crops, but these chemicals pollute the environment and (4)________. wildlife. The most successful animals on earth - human beings - will soon be the only ones (5)________., unless we can solve this problem.

Điền vào ô 5

A. left

B. over

C. staying

D. survive

1
22 tháng 10 2019

A

Kiến thức: Từ vựng, đọc hiểu

Giải thích:

left (quá khứ phân từ): còn sót lại, còn lại    over (prep): vượt qua, vượt quá

staying (hiện tại phân từ): ở lại, ở          survive (v): sống sót

Đáp án:A

Dịch bài đọc:

Hiện nay, con người ngày càng nhận ra rằng động vật hoang dã trên khắp thế giới đang gặp nguy hiểm. Nếu chúng ta không làm gì đó để bảo vệ chúng, nhiều loài đang ở bờ vực nguy hiểm sẽ dễ dàng bị tuyệt chủng. Trong một số trường hợp, động vật bị săn để lấy lông hay những phần có giá trị trên cơ thể. Một số loài chim, như vẹt, bị bắt sống và bán làm thú nuôi. Đối với nhiều loài động vật và chim chóc thì vấn đề lại là do nơi chúng sinh sống đang dần biến mất. Con người ngày càng sử dụng nhiều đất đai để làm trang trại, nhà cửa hay khu công nghiệp nên có ít không gian trống hơn trước kia. Nông dân sử dụng hóa chất để làm cây trồng phát triển hơn, nhưng những chất lại đó gây ô nhiễm môi trường và làm hại động vật hoang dã. Con người - loài động vật thành công nhất trên Trái Đất sẽ trở thành loài duy nhất sót lại trừ khi chúng ta có thể giải quyết vấn đề này.

Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question. As computer use becomes more common, the need for security is more important than ever. One of the greatest security threats in the online world is computer hacking. Computer hacking is the unauthorized access to a computer or network of computers. Hackers are people who illegally enter systems. They may alter or delete information, steal private information, or spread viruses that can...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.

As computer use becomes more common, the need for security is more important than ever. One of the greatest security threats in the online world is computer hacking. Computer hacking is the unauthorized access to a computer or network of computers. Hackers are people who illegally enter systems. They may alter or delete information, steal private information, or spread viruses that can damage or destroy files. But how exactly can a hacker get into a system to do these things?

Most hackers use information called protocols that are built into computer software. These protocols allow computers to interact with one another. Protocols are sort of like computer police officers. When a computer connects to another system, the protocols check to see if the access is valid. The protocols can also determine how much information can be shared between the two systems. Hackers can manipulate the protocols to get unlimited access to a computer system.

In fact, just the act of entering a computer network is considered hacking. This is commonly called passive hacking. Passive hackers get a rush from just being able to access a challenging system like a bank or military network. Another kind of hacker tries to do damage to a system. After hacking into systems, these hackers release viruses or alter, delete, or take information. Known as active hackers, they are, by far, the more dangerous of the two.

        The easiest way to protect a system is with a good password, Long and unusual passwords are harder for hackers to guess. For even greater security, some online services now use “password-plus” systems. In this case, users first put in a password and then put in a second code that changes after the user accesses the site. Users either have special cards or devices that show them the new code to use the next time. Even if a hacker steals the password, they won't have the code. Or if the hacker somehow gets the code, they still don't know the password.

What does the phrase "the two" in paragraph 3 refer to _______?

A. a bank and military network

B. passive and active hackers

C. hackers and viruses   

D. systems and viruses

1
11 tháng 5 2018

Đáp án B

Cụm từ “the two” trong đoạn 3 đề cập đến từ nào?

A. một hệ thống của ngân hàng và quân đội

B. tin tặc chủ động và thụ động

C. tin tặc và các loại virus

D. hệ thống và virus

Căn cứ vào thông tin đoạn 2:

“The two” là cụm từ được nhắc đến để thay thế cho 2 loại tin tặc: chủ động và thụ động trong đoạn văn.

“In fact, just the act of entering a computer network is considered hacking. This is commonly called passive hacking. Passive hackers get a rush from just being able to access a challenging system like a bank or military network Another kind of hacker tries to do damage to a system. After hacking into systems, these hackers release Viruses or alter, delete, or take information. Known as active hackers, they are, by far, the more dangerous of the two."

(Trên thực tế, chỉ cần hành động xâm nhập vào 1 hệ thống máy tính đã bị coi là đột nhập bất hợp pháp. Loại này thường được gọi là xâm nhập thụ động. Tin tặc thụ động tạo ra 1 cơn sốt khi có thể truy cập vào 1 mạng lưới quan trọng như ngân hàng hay quân đội. Một loại tin tặc khác cố gắng gây thiệt hại cho hệ thống máy tính mà họ xâm nhập. Sau khi truy cập vào hệ thống, những tin tặc này tạo ra virus hoặc thay đổi, xóa hay lấy trộm thông tin. Chúng được biết đến như là tin tặc chủ động và rõ ràng chúng là loại nguy hiểm hơn trong 2 loại tin tặc).

Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question. As computer use becomes more common, the need for security is more important than ever. One of the greatest security threats in the online world is computer hacking. Computer hacking is the unauthorized access to a computer or network of computers. Hackers are people who illegally enter systems. They may alter or delete information, steal private information, or spread viruses that can...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.

As computer use becomes more common, the need for security is more important than ever. One of the greatest security threats in the online world is computer hacking. Computer hacking is the unauthorized access to a computer or network of computers. Hackers are people who illegally enter systems. They may alter or delete information, steal private information, or spread viruses that can damage or destroy files. But how exactly can a hacker get into a system to do these things?

Most hackers use information called protocols that are built into computer software. These protocols allow computers to interact with one another. Protocols are sort of like computer police officers. When a computer connects to another system, the protocols check to see if the access is valid. The protocols can also determine how much information can be shared between the two systems. Hackers can manipulate the protocols to get unlimited access to a computer system.

In fact, just the act of entering a computer network is considered hacking. This is commonly called passive hacking. Passive hackers get a rush from just being able to access a challenging system like a bank or military network. Another kind of hacker tries to do damage to a system. After hacking into systems, these hackers release viruses or alter, delete, or take information. Known as active hackers, they are, by far, the more dangerous of the two.

        The easiest way to protect a system is with a good password, Long and unusual passwords are harder for hackers to guess. For even greater security, some online services now use “password-plus” systems. In this case, users first put in a password and then put in a second code that changes after the user accesses the site. Users either have special cards or devices that show them the new code to use the next time. Even if a hacker steals the password, they won't have the code. Or if the hacker somehow gets the code, they still don't know the password.

As suggested in the last paragraph, what is the best way for computer users to prevent hackers?

A. They should use a long and customary password so that hackers cannot guess.

B. They should use different passwords for different accounts to access the sites.

C. They should have an additional secret code to confirm for their access after putting a password.

D. They should not use any code on online services to make sure that hackers have no chance to get your password.

1
21 tháng 9 2018

Đáp án C

Như đã được gợi ý trong đoạn văn cuối, cách tốt nhất để người dùng máy tính ngăn chặn tin tặc là gì?

A. Họi nên sử dụng một mật khẩu dài và thông dụng để tin tặc không thể đoán.

B. Họ nên sử dụng các mật khẩu khác nhau cho các tài khoản khác nhau khi đăng nhập vào các trang mạng.

C. Họ nên có thêm một mã xác nhận bí mật để xác nhận cho quyền truy cập của họ sau khi đã nhập mật khẩu.

D. Họ không nên sử dụng bất kì một mã nào trên các dịch vụ trực tuyến để đảm bảo rằng tin tặc không có cơ hội đánh cắp mật khẩu.

Từ khóa: best way/ prevent hackers

Căn cứ vào thông tin đoạn văn cuối:

“The easiest way to protect a system is with a good password. Long and unusual passwords are harder for hackers to guess. For even greater security, some online services now use “password-plus” systems. In this case, users first put in a password and then put in a second code that changes after the user accesses the site. Users either have speciaal cards or devices that show them the new code to use the next time. Even ifo hacker steals the password, they won’t have the code. Or if the hacker somehow gets the code, they still don’t know the password.”

(Cách đơn giản nhất để bảo vệ hệ thống là sử dụng 1 mật khẩu tốt. Mật khẩu đài và khác thường sẽ khiến tin tặc khó đoán được. Để bảo mật hơn nữa, một số địch vụ trực tuyến hiện nay đã sử dụng hệ thống “mật khẩu cộng mật khẩu”. Trong trường hợp này, trước hết người dùng nhập mật khẩu, sau đó nhập tiếp một mã thứ hai mà luôn thay đổi sau khi người dùng truy cập vào trang mạng. Người dùng sẽ có các dịch vụ hoặc thẻ đặc biệt cho họ biết mã truy cập mới cho lần đăng nhập tiếp theo. Ngay cả khi tin tặc lấy cắp được mật khẩu, họ cũng sẽ không có mã đăng nhập. Hoặc bằng cách nào đó tin tặc lấy được mã đăng nhập, họ cũng không thể biết mật khẩu là gì.)

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________ if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught...
Đọc tiếp

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.

Nowadays people are more aware that wildlife all over the world is in (1)________. Many species of animals are threatened, and could easily become (2)________ if we do not make an effort to protect them. In some cases, animals are hunted for their fur or for other valuable parts of their bodies. Some birds, such as parrots, are caught (3)________and sold as pets. For many animals and birds the problem is that their habitat - the place where they live - is disappearing. More land is used for farms, for houses or industry, and there are fewer open spaces than there once were. Farmers use powerful chemicals to help them to grow better crops, but these chemicals pollute the environment and (4)________ wildlife. The most successful animals on earth - human beings - will soon be the only ones (5)________, unless we can solve this problem.

Question 1

 

A. threat

B. problem

C. danger

D. vanishing

2
28 tháng 12 2018

Đáp án: C

Giải thích: ta có cụm “be in danger” (a) gặp nguy hiểm

11 tháng 4 2023

C