题目内容

25. So little _____ about mathematics that the lecture was completely beyond me.

A. I know
B. I knew
C. do I know
D. did I know

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26. It was not long _____ the news spread and people from all over the world came to visit this miracle of nature.

A. after
B. before
C. until
D. when

27. No sooner had we reached the top of the hill _____ we all sat down to rest.

A. when
B. then
C. than
D. until

28. San Francisco is usually cool in the summer, but Los Angeles _____ .

A. is rarely
B. rarely is
C. hardly is
D. is scarcely

29. Our teacher recommends that we _____ as attentive as possible when we visit the museum.

A. are
B. shall be
C. were
D. be

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