(C) To let the students have a good rest.
(D) To make the summer school more like a holiday.
10. (A) Because they all work very hard.
(B) Because their teachers are all native speakers of English.
(C) Because they learn not only in but also out of class.
(D) Because they are all advanced students.
Passage Two
Questions 14 to 16 are based on the passage you have just heard.
17. (A) Chemicals. (C) Water.
(B) Vapor. (D) Gas.
18. (A) By passing steam over dry ice. (C) By heating dry ice.
(B) By turning ordinary ice into steam. (D) By mixing dry ice with ordinary ice.
19. (A) It takes a longer time to melt. (C) It is cleaner to use than ordinary ice.
(B) It is lighter to carry. (D) It is not so cold as ordinary ice.
20. (A) In the 1920’s. (C) In the 1940’s.
(B) In the 1930’s. (D) In the 1950’s.
Part II Reading Comprehension (35 minutes)
Passage One
Questions 21 to 25 are based on the following passage.
Researchers have established that when people are mentally engaged, biochemical changes occur in the brain that allow it to act more effectively in cognitive (认知的) areas such as attention and memory. This is true regardless of age.
People will be alert (警觉的) and receptive (接受能力强的) if they are faced with information that gets them to think about things they are interested in. And someone with a history of doing more rather than less will go into old age more cognitively sound than someone who has not had an active mind.
Many experts are so convinced of the benefits of challenging the brain that they are putting, the theory to work in their own lives. "The idea is not necessarily to learn to memorize enormous amounts of information." says James Fozard, associate director of the national Institute on Aging. "Most of us don’t need that kind of skill. Such specific training is of less interest than being able to maintain mental alertness." Fozard and others say they challenge their brains with different mental skill, both because they enjoy them and because they are sure that their range of activities will help the way their brains work.
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