Lyderic and his team hope to design a motorized catapult because ______.
A. they want to make the experiment to be more sacred
British engineer Barnes Wallis did his experiment this way
C. human beings cannot ensure the speed and spin needed
D. they wanted to rediscover a piece of history
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Section B
Directions: In this section, there are 10 incomplete sentences. For each sentence there are 4 choices marked A, B, C and D. Choose the one that best completes the sentence. Then mark the corresponding letter with a single bar across the square brackets on your rnachine-scoring ANSWER SHEET.
Is this an ______ order or a personal request？
A. authentic
B. influential
C. authoritarian
D. authoritative
According to paragraph five, which of the following statements reflects the present medical reality？
A. It is biologically bad for teenagers to play games or lie on the couch watching MTV.
B. Teenager boys should drink six or eight glasses of hot water in the morning everyday.
C. Scientists should apply the findings of brain scans to practical use as soon as possible.
D. Scientists still don't know how to explain the subtle changes seen in teenager brain scans.
In the last line, paragraph two, "a house in the process of being rewired" indicates that
A. teenagers like to live in a house rewired
B. teenagers' brain structure like a house
C. teenage brain is working in progress like a house being rewired
D. teenager tend not to get erratic huffiness if the house ,is rewired
【C13】______
A. to require
B. required
C. requiring
D. are required
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