Describe one way in which decay by micro-organism in a nuisance.

NP

Nguyễn Phương Quyên

4 tháng 11 2018 - olm

#Tiếng anh lớp 6

0

LQ

Lê Quỳnh Anh

4 tháng 7 2019

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 35 to 42. The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth,...

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 35 to 42.

The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of the microbial flora, and whether the bacteria of the plaque have been “primed” by frequent exposure to sugar. To keep your teeth healthy, a regular dental hygiene program should be followed.

Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. Fluoride toothpaste seems to act in another way, by promoting the remineralization of early carious lesions.

In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food. The least cavity-causing way to eat sweets is to have them with meals and not between. The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce. But the amount of sweets influences the quality of your saliva. Avoid, if you can, sticky sweets that stay in your mouth a long time. Also try to brush and floss your teeth after eating sugary foods. Even rinsing your mouth with water is effective. Whenever possible, eat foods with fiber, such as raw carrot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush. Cavities can be greatly reduced if these rules are followed when eating sweets.

We can infer from the passage that one benefit of fluoride to healthy teeth is _________ .

A. It strengthens tooth enamel

B. It stimulates saliva production

C. It makes teeth whiter

D. It is a replacement for brushing and flossing in dental care

#Mẫu giáo

1

DH

Dương Hoàn Anh

4 tháng 7 2019

Chọn đáp án A

Chúng ta có thể suy luận từ đoạn văn rằng một lợi ích của florua đối với răng chắc khỏe là _________.

A. Nó tăng cường men răng

B. Nó kích thích việc tiết nước bọt

C. Nó làm cho răng trắng hơn

D. Nó là sự thay thế cho việc đánh răng và dùng chỉ nha khoa trong việc chăm sóc răng miệng

Dẫn chứng: If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. (Nếu Florua có mặt trong nước uống khi răng đang hình thành thì một số florua sẽ được kết hợp vào men răng giúp chúng có khả năng chống lại sự tấn công của axit.)

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LQ

Lê Quỳnh Anh

29 tháng 12 2018

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. The cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of...

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.

The cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of the microbial flora, and whether the bacteria of the plaque have been "primed" by frequent exposure to sugar. To keep your teeth healthy, a regular dental hygiene program should be followed.
Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. Fluoride toothpaste seems to act in another way, by promoting the remineralization of early carious lesions.
In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food. The least cavity-causing way to eat sweets is to have them with meals and not between. The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce. But the amount of sweets influences the quality of your saliva. Avoid, if you can, sticky sweets that stay in your mouth a long time. Also try to brush and floss your teeth after eating sugary foods. Even rinsing your mouth with water is effective. Whenever possible, eat foods with fiber, such as raw carrot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush. Cavities can be greatly reduced if these rules are followed when eating sweets.

We can infer from the passage that one benefit of fluoride to healthy teeth is __________.

A. It strengthens tooth enamel

B. It stimulates saliva production

C. It makes teeth w

D. It is a replacement for brushing and flossing in dental care

#Mẫu giáo

1

DH

Dương Hoàn Anh

29 tháng 12 2018

Đáp án A

Chúng ta có thể suy luận từ đoạn văn rằng một lợi ích của florua đối với răng chắc khỏe là __________.
A. Nó tăng cường men răng
B. Nó kích thích sản xuất nước bọt
C. Nó làm cho răng trắng hơn
D. Nó là một chất thay thế cho việc đánh răng và dùng chỉ nha khoa trong chăm sóc răng miệng
Thông tin ở câu: “If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid.” (Nếu florua có mặt trong nước uống khi răng đang hình thành, một số florua sẽ được kết hợp vào men răng, giúp chúng có khả năng chống lại sự tấn công của axit.

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MV

Mỹ Vân

19 tháng 12 2020

Describe one of room in your house Which room What is there in room What things do you like best in the room ? Why?

#Tiếng anh lớp 8

3

PD

Phương Dung

19 tháng 12 2020

In my house, my favorite room in my house I would have to say it's my bedroom. The reason my bedroom is the my favorite room in my house, because it's the biggest room in my house. I have everything in my room my plat screen,my Ps3, and my surround sound. Obviously, when I want some alone time I go to my bedroom and be on my laptop or playing Black Ops.

I really don't like being in my living room, because my twin sister and I fight for the T.V. So when I want to watch my favorite program I just go to my bedroom. I also like my bedroom, because I have my own mini fridge and I put all my snacks in my mini fridge. My bedroom is the most soothing place in the whole house, because no one enters my bedroom.

That's the reasons why my bedroom is my most favorite spot in my bedroom. I also go in my bedroom to work on my homework and won't get disturbed. My room is a great place to be in I get the best internet access. So that's why my bedroom is my most favorite place in my house.

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LT

Lê Trang

19 tháng 12 2020

My house has a lot of rooms but bedroom is my favorite place.

My room is blue and white. It is big and tidy. Near the door is my desk, the desk is the place where I study. In front of my desk is a big window. It makes my room seem very comfortable. The wall is decorated by a beautiful picture. My bed was place in the corner of the room. Opposite the door is a clock hanging on the wall. My room has a computer, it’s on my desk. My room also has some old things which are put very neatly in a box under the bed

My bedroom is very great, I love my room very much. If you go there I think you will like my room

#Tham khảo!

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CL

Chippy Linh

6 tháng 1 2021

Twenty years ago only large companies (1)……………. computers. They were large (2)……………. which filled rooms and they always had big tapes which went round and round. (3)……………. the 1980s one in every tow families (4)……………. Britain had a micro-computer – most schools also had several. (5)……………. new machines were much cheaper and much smaller (6)………………… the older ones. People used them (7)……………. pleasure as well as business. A recent survey showed that over 40% of home computer owners used them mainly...

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#Tiếng anh lớp 8

1

TL

Tuệ Lâm

6 tháng 1 2021

Twenty years ago only large companies (1)……………. computers. They were large (2)……………. which filled rooms and they always had big tapes which went round and round. (3)……………. the 1980s one in every tow families (4)……………. Britain had a micro-computer – most schools also had several. (5)……………. new machines were much cheaper and much smaller (6)………………… the older ones. People used them (7)……………. pleasure as well as business. A recent survey showed that over 40% of home computer owners used them mainly for (8)…………….

1. A. have B. had C. has D. having

2. A. machines B. matches C. metal D. factories

3. A. on B. At C. in D. of

4. A. in B. at C. on D. over

5. A. They B. This C. That D. These

6. A. that B. over C. than D. as

7. A. to B. for C. with D. of

8. A. games B. lines C. plays D. changes

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LQ

Lê Quỳnh Anh

13 tháng 6 2017

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 35 to 42. The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth,...

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 35 to 42.

The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of the microbial flora, and whether the bacteria of the plaque have been “primed” by frequent exposure to sugar. To keep your teeth healthy, a regular dental hygiene program should be followed.

Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. Fluoride toothpaste seems to act in another way, by promoting the remineralization of early carious lesions.

In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food. The least cavity-causing way to eat sweets is to have them with meals and not between. The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce. But the amount of sweets influences the quality of your saliva. Avoid, if you can, sticky sweets that stay in your mouth a long time. Also try to brush and floss your teeth after eating sugary foods. Even rinsing your mouth with water is effective. Whenever possible, eat foods with fiber, such as raw carrot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush. Cavities can be greatly reduced if these rules are followed when eating sweets.

The author of the passage states that the amount of acid produced by the bacteria in your saliva increases _________.

A. with the amount of sweets you eat

B. with the number of times you eat sweets

C. if you eat sweets with your meals

D. if you eat sticky sweets

#Mẫu giáo

1

DH

Dương Hoàn Anh

13 tháng 6 2017

Chọn đáp án B

Tác giả của bài đọc nói rằng lượng axit do vi khuẩn tiết ra trong nước bọt tăng lên _________.

A. cùng với lượng đồ ngọt mà bạn ăn

B. cùng với số lần bạn ăn đồ ngọt

C. nếu bạn ăn đồ ngọt cùng với các bữa ăn

D. nếu bạn ăn đồ ngọt dẻo

Dẫn chứng: The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce. (Số lần bạn ăn đồ ngọt quyết định có bao nhiêu axit gây hại do vi khuẩn tiết ra trong nước bọt của bạn.)

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LQ

Lê Quỳnh Anh

30 tháng 8 2018

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. The cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of...

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.

The cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of the microbial flora, and whether the bacteria of the plaque have been "primed" by frequent exposure to sugar. To keep your teeth healthy, a regular dental hygiene program should be followed.
Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. Fluoride toothpaste seems to act in another way, by promoting the remineralization of early carious lesions.
In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food. The least cavity-causing way to eat sweets is to have them with meals and not between. The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce. But the amount of sweets influences the quality of your saliva. Avoid, if you can, sticky sweets that stay in your mouth a long time. Also try to brush and floss your teeth after eating sugary foods. Even rinsing your mouth with water is effective. Whenever possible, eat foods with fiber, such as raw carrot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush. Cavities can be greatly reduced if these rules are followed when eating sweets.

The author of the passage states that the amount of acid produced by the bacteria in your saliva increases __________.

A. with the amount of sweets you eat

B. with the number of times you eat sweets

C. if you eat sweets with your meals

D. if you eat sticky sweet

#Mẫu giáo

1

DH

Dương Hoàn Anh

30 tháng 8 2018

Đáp án B

Tác giả của đoạn văn nói rằng lượng axit do vi khuẩn tạo ra trong nước bọt tăng __________.
A. với lượng đồ ngọt mà bạn ăn
B. với số lần bạn ăn đồ ngọt
C. nếu bạn ăn kẹo cùng với các bữa ăn
D. nếu bạn ăn đồ ngọt dẻo
Thông tin ở câu: “The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce.” (Số lần bạn ăn đồ ngọt thay vì tổng số lượng bạn ăn quyết định có bao nhiêu axit gây hại do vi khuẩn trong nước bọt của bạn tạo ra)

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LQ

Lê Quỳnh Anh

28 tháng 8 2018

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 35 to 42. The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth,...

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 35 to 42.

The main cause of tooth decay is acid, which is produced by bacteria in the mouth. The acid removes minerals from tooth enamel, allowing tooth decay to begin; the saliva in your mouth encourages remineralization and neutralizes the acid. The rate at which bacteria in the mouth produce acid depends on the amount of plaque on the teeth, the composition of the microbial flora, and whether the bacteria of the plaque have been “primed” by frequent exposure to sugar. To keep your teeth healthy, a regular dental hygiene program should be followed.

Removing plaque with a toothbrush and dental floss temporarily reduces the numbers of bacteria in the mouth and thus reduces tooth decay. It also makes the surfaces of the teeth more accessible, enabling saliva to neutralize acid and remineralize lesions. If fluoride is present in drinking water when teeth are forming, some fluoride is incorporated into the enamel of the teeth, making them more resistant to attack by acid. Fluoride toothpaste seems to act in another way, by promoting the remineralization of early carious lesions.

In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food. The least cavity-causing way to eat sweets is to have them with meals and not between. The number of times you eat sweets rather than the total amount determines how much harmful acid the bacteria in your saliva produce. But the amount of sweets influences the quality of your saliva. Avoid, if you can, sticky sweets that stay in your mouth a long time. Also try to brush and floss your teeth after eating sugary foods. Even rinsing your mouth with water is effective. Whenever possible, eat foods with fiber, such as raw carrot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush. Cavities can be greatly reduced if these rules are followed when eating sweets.

The word “scrape off” in line 29 is closest in meaning to _________.

A. repel

B. rub together with

C. remove

D. dissolve

#Mẫu giáo

1

DH

Dương Hoàn Anh

28 tháng 8 2018

Chọn đáp án C

Từ “scrape off’ gần nghĩa nhất với từ _________.

A. đẩy lùi

B. cọ xát vào nhau.

C. loại bỏ

D. hòa tan

“Whenever possible, eat foods with fiber, such as raw caưot sticks, apples, celery sticks, etc., that scrape off plaque, acting as a toothbrush.” (Bất cứ khi nào có thể, hãy ăn các loại thực phẩm giàu chất xơ, như cà rốt sống, táo, cần tây, ...mà có thể giúp loại bỏ cao răng, chúng giống như một chiếc bàn chải đánh răng.)

Do đó: scrape off ~ remove

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MA

Mai An

3 tháng 9 2021

Write one word which can be used in both two sentences.11.You must be joking saying you believe Elizabeth. She was lying to us through her _____ Decay has set in because she hasn’t taken enough care of her _____over the years12. A big hospital is going to be _______ in this village Mary ______it hard to drive on the right a few months ago,but now she is used to it13. The villagers were advised to keep a close _____on the water level in the river during the rainy season. If you don’t...

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#Tiếng anh lớp 9

0