题目内容

Color-blind people often find it difficult to___________ blue and green.

A. compare
B. contrast
C. distinguish
D. separate

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He is a student of great intelligence and diligence. ___________, he is a top student in the class.

A. Undoubtedly
B. Fortunately
C. Nevertheless
D. In spite

Community service can ___________ anything from gardening to helping in old people’s homes.

A. involve
B. ask
C. insist
D. remain

The office was in darkness ___________ the light over his desk.

A. besides
B. except
C. except for
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What we would like you to know is that we greatly ___________your timely help.

A. compliment
B. appreciate
C. thank
D. attach