Read the following pasage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions
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-1980, 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 10:00 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?
A. Risk factors in heart attacks
B. Seasonal and temporal pattern of heart attacks
C. Cardiology in the 1980s
D. Diet and stress as factors in heart attacks
Giải bởi qa.haylamdo.com
A
Kiến thức: Đọc hiểu
Giải thích:
Đoạn văn chủ yếu thảo luận gì?
A. Các yếu tố nguy cơ trong các cơn đau tim
B. Các cơn đau tim theo thời vụ thời gian
C. Bệnh tim mạch vào những năm 1980
D. Chế độ ăn uống và căng thẳng như các yếu tố trong các cơn đau tim
Thông tin: 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. (Bởi bệnh tim tiếp tục là căn bệnh chết người số một tại Hoa Kỳ, các nhà nghiên cứu ngày càng quan tâm đến việc xác định các yếu tố nguy cơ tiềm ẩn gây ra các cơn đau tim.)
Các đoạn phía sau làm rõ về các yếu tố nguy cơ gây ra bệnh tim.
Đáp án:A
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Điền vào ô 4
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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
