单选题 For well over 2000 years the world's great religions have taught the virtues of a trusting heart. Now there is another reason to merit the wisdom of the ages: scientific evidence indicates that those with trusting hearts will live longer, healthier lives.
As a result of the work published in the 1970s by two pioneering heart specialists, Meyer Friedman and Ray H. Rosenman,nearly every American is aware that blood Type A people are impatient, and easily moved to hostility (敌意) and anger. (79) Many have come to believe that Type A's are at a much higher risk of suffering heart attack or dying of heart disease than others.
The driving force behind hostility is a cynical mistrust of others. If we expect others to mistreat us, we are seldom disappointed.This generates anger and leads us to respond with hostility.
(80) The most characteristic attitude of a cynic is being suspicious of the motives (动机) of people he doesn't know. Imagine you are waiting for an elevator and it stops two floors above for longer than usual. How inconsiderate! You think.In a few seconds, you have drawn hostile conclusion about unseen people and their motives.
Meanwhile, your cynical mistrust is leading to noticeable physical consequences. Your voice rises. The rate and depth of your breathing increases. Your heart is beating faster and harder, and the muscles of your arms and legs become tight. You feel "charged up", ready for action.
If you frequently experience these feelings, you may be at increased risk of developing serious health problems. Anger can add to the risk of heart and other diseases.

单选题 A cynic,in the passage, is a person ______
A. whose behavior usually leads to serious health problems
B. who is always ready to fight
C. who usually has doubts about the people around him
D. whose behavior usually seems strange to the people he knows
【正确答案】 C
【答案解析】第四段第一句话说“a cynic”总是怀疑别人动机不纯，与C的叙述一致。
单选题 According to the passage, if you have a fixed idea in mind that people will mistreat you,you will always find it ______.
A. to be wrong B. to be so
C. to be disappointing D. to be pleasing
【正确答案】 B
【答案解析】第三段意为“敌意的背后是对他人愤世嫉俗的不信任，这样，假设我们期待他人会虐待我们，那么我们很少会感到失望的。”意思是说，只要你坚持认为别人会恶意地对待你，你总会发现事实的确如此，别人都不会善待你。所以B项“的确如此”正是此意。
单选题 The author's intention in writing the passage is to ______
A. praise the wisdom of the old people
B. advise people to be patient
C. analyze the danger of heart diseases
D. persuade people to be trustful
【正确答案】 D
【答案解析】文章一开篇就说：2000多年前宗教就教给人们，有一颗充满信任的心是一种美德。而当今科学又证明了这一点，对别人充满信任的人会活得更长、更健康。接下来便详细解释了这一科学道理。所以不难理解正确答案为D。
单选题 According to the author, people with trusting hearts are ______
A. not likely to be mistreated by others
B. less likely to get heart diseases
C. usually intelligent and wise
D. usually very religious
【正确答案】 B
【答案解析】对照四个选项，只有B符合本文的意思。
单选题 The book by Meyer Friedman and Ray H. Rosenman most probably discusses ______
A. people's characters and their blood types
B. friendliness and hostility
C. trust and mistrust of people
D. heart diseases and death rate
【正确答案】 D
【答案解析】第二段中称二人为“two pioneering heart specialistsC，即两位是心脏研究领域的领路人，因此，B和C不合题意；仔细分析一下A，第二段后半部分对血型与心脏有所描述，但显然这不是书的全部内容；而D则包含更多的内容，应为最佳答案。