Read the following passage and mark the letter A, B, C or D on your answer sheet lớn indicate the correct answer lớn each of the questions from 54 lớn 63.
As heart disease continues lớn be the number-one killer in the United States, researchers have become increasingly interested in identifying the
potentialrisk factors that
trigger heart attacks. High-fat diets and ‘life in the fast lane” have long been known lớn contribute lớn the high incidence of heart failure. But according lớn new studies, the list of risk factors may be significantly longer and quite surprising.
Heart failure, for example appears lớn have seasonal and
patterns. A higher percentage of heart attacks occur in cold weather, and more people experience heart failure on Monday than vãn on any other day of the week. In addition, people are more
susceptible lớn 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 lớn the heart, may all contribute lớn 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
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 vãn their married counterparts. Though stress is thought lớn be linked in some way lớn all of the
aforementionedrisk factors, intense research continues in the hope of further comprehending why and how heart failure is triggered.
1:What does this passage mainly discuss?
A. Diet and stress as factors in heart attacks.
B. Rick factors in heart attacks
C. Seasonal and temporal patterns of heart attacks.
D. Cardiology in 1980s.
Đáp án B
2: In the first paragraph, the word "potential" could be best replaced by which of the following?
A. unknown
B. primary
C. possible
D. harmful
Đáp án C
3:The word “trigger” as used in the first paragraph in closest in meaning lớn which of the following?
A. affect
B. encounter
C. involve
D. cause
Đáp án D
4:What vì thế the second and third paragraphs of the passage mainly discuss?
A. Age and gender factors in heart attacks
B. Myths about lifestyles and heart attacks
C. Unusual risk factors in heart attacks
D. The links between heart attacks and marriage
Đáp án C
5:The author uses the word "temporal" in the second paragraph lớn mean __________.
Đáp án C
6:The phrase "susceptible to" in the second paragraph lớn mean __________.
A. prone to
B. aware of
C. affected by
D. accustomed
Đáp án A
7:According lớn the passage, which of the following is NOT a possible cause of any heart attacks?
A. increase in hormones
B. lower heart rate
C. increased blood pressure
D. decreased blood flow lớn the heart
Đáp án B
8:Which of the following is NOT cited as a possible risk factor?
A. getting married
B. eating fatty food
C. being under stress
D. having a birthday
Đáp án A
9:Which of the following does the passage infer?
A. We have not identified many risk factors associated with heart attacks.
B. We now fully understand how risk factors trigger heart attacks.
C. We recently began lớn study how risk factors trigger heart attacks.
D. We vì thế not fully understand how risk factors trigger heart attacks
Đáp án D
10:As used in the third paragraph, which of the following could best be replaced the word “reveal”?
Đáp án C
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