第4部分：阅读理解(第31-45题，每题3分，共45分)
下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。
31. AI means the same as
A. an image.
B. an idea.
C. anyone in the water.
D. artificial intelligence.
32. What is required of AI software to save a life?
A. It must be able to swim.
B. It must keep walking round the pool.
C. It can distinguish between a swimmer and a shadow.
D. It can save a life within a few months.
33. How does Poseidon save a life?
A. He plunges into the pool.
B. It alerts the lifeguard.
C. He cries for help.
D. It rushes to the pool.
34. Which of the following statements about Trevor Baylis is NOT true'?
A. He runs.
B. He invented the clockwork radio.
C. He was once an entertainer.
D. He runs a company.
35. The word "considered" in paragraph 5 could be best replaced by
A. "thought".
B. "rated".
C. "regarded".
D. "believed".
36. According to the passage, which of the following is true?
A. Eating less than usual might make us live longer.
B. We don't need to go on a diet.
C. A meager diet may be fun.
D. We have to begin dieting from childhood.
37. How many mice were compared in Spindler's experiment in one group?
A.3.
B.6.
C.9.
D.12.
38. What can be in{erred about the experiment?
A. Completely normally fed mice will not experience free radical production.
B. Mice dieting in old age are not prone to diseases.
C. Mice dieting all their lives live longer.
D. Dieting doesn't play any role in slowing down aging.
39. The researchers studied the mice.
A. to tell us how mice's liver genes behave.
B. to encourage people to diet to be healthy.
C. to try to make it work in people.
D. to describe the influence of old age on mice.
40. According to the last two paragraphs, Spindler believes that
A. dieting is not a good method to give us health and a long life.
B. seeing the effect of a diet, people will eat less than normal.
C. calorie restriction is very important to young people.
D. drugs do not have the effects of calorie restriction.
41. People with social anxiety disorder are known for their fear of
A. being left alone.
B. leading normal lives.
C. embarrassing other people.
D. facing social or performance situations.
42. What do people with social anxiety disorder think of their fear?
A. They think it's beyond their control.
B. They think it's beneficial.
C. They think it's controllable.
D. They think it's justified.
43. Which is NOT true of people with social anxiety disorder?
A. They're often isolated and ashamed.
B. They find it difficult to make friends.
C. They often fail to get timely treatment.
D. They tend to judge or criticize other people.
44. The symptoms of social anxiety disorder include all the following EXCEPT
A. heart palpitations.
B. sore throat.
C. sweating.
D. blushing.
45. It can be seen from the last paragraph that treatment of the disorder
A. has no positive effect at all.
B. is unavailable to most sufferers.
C. tends to be refused by the sufferers.
D. can lead to improvement in the sufferers' lives.
