Câu hỏi:
12/03/2020 461Read 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.
As heart disease continues to be the number-one killer in the United States, researchers have become increasingly interested in identifying the potential risk factors that trigger heart attacks. High-fat diets and „life in the fast lane” have long been known to contribute to the high incidence of heart failure. But according to new studies, the list of risk factors may be significantly longer and quite surprising.
Heart failure, for example appears to have seasonal and temporal patterns. A higher percentage of heart attacks occur in cold weather, and more people experience heart failure on Monday than on any other day of the week. In addition, people are more susceptible to heart attacks in the first few hours after waking. Cardiologists first observed this morning phenomenon in the mid-1980s and have since discovered a number of possible causes. An early-morning rise in blood pressure, heart rate, and concentration of heart-stimulating hormones, plus a reduction of blood flow to the heart, may all contribute to the higher incidence of heart attacks between the hours of 8:00 A.M and 10 A.M.
In other studies, both birthdays and bachelorhood have been implicated as risk factors. Statistics reveal that heart attack rates increase significantly for both females and males in the few days immediately preceding and following their birthdays. And unmarried men are more at risk for heart attacks than their married counterparts. Though stress is thought to be linked in some way to all of the aforementioned risk factors, intense research continues in the hope of further comprehending why and how heart failure is triggered.
What does the passage mainly discuss?
Đáp án chính xác
Câu hỏi trong đề:
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Trả lời:
Giải bởi Vietjack
Ý chính của bài đọc này là gì?
A. tim mạch học vào những năm 1980
B. nhân tố rủi ro dẫn đến các cơn đau tim
C. khẩu phần ăn và sự căng thẳng và các nhân tố gây ra đau tim
D. những cơn đau tim theo mùa và theo thời gian
Chọn B
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
A good leader in globalization is not to impose but change.
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Câu 2:
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
The writer was really hot under the collar when his novel was mistaken for another.
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Câu 3:
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
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Câu 4:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
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Câu 5:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
The handwriting is completely ______. This note must have been written a long time ago.
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Câu 6:
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Câu 7:
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
Thanks to my friend’s ________ remarks, my essays have been improved
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về câu hỏi!