题目内容

Almost every American college campus has what can be called an international club, the main purpose of which is ____ friendship among all students of the world.

A. as promoting
B. for promoting
C. due to promote
D. to promote

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Located in Canada, the Columbia Icefield ____ area of 120 square miles and is 3,300 feet thick in some places.

A. covers an
B. covers the
C. cover an
D. cover the

Biologists are predicting that they ____ able to alter genes and control heredity.

A. have been
B. will be
C. would like to be
D. had been

She wondered if she could have the opportunity to spend ____ here so that she could learn more about the city.

A. sometimes
B. some time
C. sometime
D. some tomes

Without these achievements, the opening of the west ____

A. couldn't occur
B. needn't have occurred
C. couldn't have occurred
D. can't occur

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