题目内容

【C8】

A. By the way
B. To his way
C. On his way
D. In the way

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【C7】

A. Not
B. No
C. Have no
D. Any

According to the author, scientists______.

A. have already proved that coffee is good for human health
B. have a long way to go before they find a way to study coffee
C. have avoided the cause-and-effect approach to study coffee
D. are still unable to figure out why coffee is good for us

【C6】

A. reading
B. to read
C. read
D. doing

【C3】

A. has to
B. has
C. able to
D. will

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