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1.We should not sacrifice environmental protections to foster economic growth.

A.reduce

B.promote

C.realize

D.give

正确答案：B

2.There is a growing gap between the rich and the poor.

A.conflict

B.tension

C.gulf

D.confrontation

正确答案：C

3.I am very grateful to you for your assistance.

A.helpful

B.hopeful

C.pitiful

D.thankful

正确答案：D

4.That guy is intelligent but a bit dull.

A.strange

B.special

C.quiet

D.boring

正确答案：D

5.She is a highly successful teacher.

A.fairly

B.rather

C.very

D.moderately

正确答案：C