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福建师范大学网络与继续教育学院
大学英语〔1〕期末考试A卷
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一、阅读：20% 〔每题2分〕
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A to the kind that people face while driving in heavy traffic. But the researchers of the latest study say they do not know whether the increased heart attack risk was the result of stress or pollution. They suggest it may be a combination of stress, noise and pollution. Experts say the research shows the need fro cleaner vehicles and better city planning.
1. According to the study, which of the following ways is the safest in traffic
A. Driving a car B. Walking on the street
C. Taking a bus D. Riding a bicycle
2. From among the 700 people who suffered heart attacks we learn that ______.
A. those who have been in traffic are three times as many as those who have not
B. those who have been in traffic for more than one hour are most likely to suffer heart attacks
C. the risk of a heart attack is three higher among those who have been in traffic than those who have not
D. Most of the subjects (实验对象) felt uncomfortable during the four days before the attack
3. The particles released from vehicles ______.
A. build up in the blood
B. become blockages in the arteries
C. make the blood more sticky
D. do harm to the heart
4. According to the studies, which of the following is NOT a likely cause of heart attack