2010年西北工业大学考博英语真题

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18. It was his wife’s encouragement that had _______ his through the bad times.

A. delivered

B. relieved

C. sent

D. brought

19. The distance from the Earth to the spacecraft is often determined very accurately from the time _______ between two radio signals.

A. interaction

B. alternative

C. interference

D. interval

20. Finding himself trapped in the Death Valley, he had a sudden feeling of _______.

A. despair

B. desperate

C. frightened

D. dreadful

21. In a time of social reform, people’s state of mind tends to keep pace with the rapid changes of society.

A. take step

B. match up

C. keep in touch
D. make progress

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