题目内容

Once you have started a job, you should do it in ( ).

A. practice
B. theory
C. earnest
D. hurry

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Recent studies show that moderate amounts of alcohol are beneficial ( )health.

A. for
B. to
C. with
D. of

The ( ) between the rich and the poor becomes wider and wider nowadays.

A. space
B. opening
C. gap
D. separation

The cost of these complex operations is ( ) but poorly known.

A. considerable
B. sufficient
C. numerous
D. enormous

The earliest skis were ( ) ,consisting of short boards covered in fiir skins.

A. crude
B. coarse
C. rude
D. rough

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