题目内容

There _______a knock at the doorjust now .

A. will be
B. has been
C. were
D. was

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Therea pen and two books on the desknow.

A. are
B. be
C. is
D. was

There is _____ on the floor.

A. cat
B. water
C. boxes
D. football

——Are therefive pens on the desk?——_______________.

A. Yes, there is
B. No, there isn’t
C. Yes, there isn't
D. No, there aren’t

霍乱的治疗原则不包括:

A. 补液治疗
B. 抗菌药物治疗
C. 微生态调节剂
D. 预防治疗

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