题目内容

Given the chance to show his ability, he regained and began to succeed in school.

A. success
B. confidence
C. opportunity
D. chance

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It is so difficult to the bottom of the ocean because some parts are very deep.

A. explore
B. know
C. develop
D. observe

There is widespread concern that the rising unemployment may a threat to social stability.

A. have
B. lead
C. pose
D. cause

After a (an) physical exam, my doctor said I was in good condition except that my blood pressure was a little high.

A. complicated
B. comprehensive
C. common
D. expensive

Some people believe that the earth can enough food to support at least twice its present population.

A. assemble
B. contribute
C. manufacture
D. yield

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