1. the claim about German economic might，it is somewhat surprising how relatively small the German economy actually is.
A. To give B. Given C. Giving D. Having given
2．Some people view the findings with caution，noting that a cause-and-effect relationship between passive smoking and cancer remains＿．
A. to be shown B. to have shown
C. to have been shown D. being shown
3. He was a young man of barely eighteen years，evidently country-bred＿，and now，as it seemed，on his first visit to town.
A. brought up B. bred
C. grown up D. raised
4. City planners must never forget that public acceptance of their ideas requires time. So when their ideas are＿，they must continue to work.
A. ref used B. rejected
C. denied D. objected
5. The first men to study the nature of electricity could not imagine that their experiments，carried on because of mere intellectual curiosity，would eventually lead to modern electrical technology，without which we can scarcely＿contemporary life.
A. get hold of B. conceive of
C. get the better of D. take advantage of