Câu hỏi:
01/04/2020 240Read 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.
What can be concluded from the passage about sweets?
Đáp án chính xác
Câu hỏi trong đề:
Đề thi thử THPT quốc gia năm 2019 môn tiếng anh chuẩn cấu trúc !!
Sách mới 2k7: Tổng ôn Toán, Lí, Hóa, Văn, Sử, Địa…. kỳ thi tốt nghiệp THPT Quốc gia 2025, đánh giá năng lực (chỉ từ 110k).
Quảng cáo
Trả lời:
Giải bởi Vietjack
Đáp án B
Có thể kết luận điều gì từ đoạn văn về đồ ngọt?
A. Nên tránh tất cả các loại đồ ngọt.
B. Đồ ngọt phải được ăn một cách cẩn thận.
C. Tốt hơn nếu ăn một chút đồ ngọt trong một thời điểm trong ngày.
D. Những đồ ngọt dẻo ít gây hại hơn các đồ ngọt khác.
Thông tin ở câu: “In addition to a regular dental hygiene program, a good way to keep your teeth healthy is to reduce your intake of sweet food.” => Không nên tránh tất cả các loại đồ ngọt mà chỉ nên giảm lượng đồ ngọt bạn ăn => Phải ăn đồ ngọt một cách cẩn thận
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 2:
Mark the letter A, B, C, D on your answer sheet to indicate the underlined part that needs correction in each of the following questions:
Sandara has not rarely missed a play or concert since she was seventeen years old.
Xem đáp án »
01/04/2020
20,863
Câu 3:
Different conservation efforts _________ in order to save endangered species.
Xem đáp án »
01/04/2020
20,399
Câu 4:
Mark the letter A,B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
I had to clear the spare room before I could start decorating.
Xem đáp án »
01/04/2020
12,508
Câu 5:
Mark the letter A, B, C, D on your answer sheet to indicate the word whose underlined part differs from that of the other three in pronunciation in each of the following questions:
Xem đáp án »
01/04/2020
11,613
Câu 6:
Mark the letter A,B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
He didn’t pay attention to what I said.
Xem đáp án »
01/04/2020
9,007
Câu 7:
Peter: “Do you like going to the cinema this evening, Susan?”
Susan: “_______.”
Xem đáp án »
01/04/2020
6,999
về câu hỏi!