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问题 选择题

There is much chance _____ Bill will recover from his injury in time for the race. [ ]

A. that

B. which

C. until

D. if

答案

答案：A

填空题

用括号中所给词的适当形式填空。

1. My friend called me yesterday. We______ (chat) for hours.

2.1 forgot ______ (look) the door when I left.

3. He hasn't ______ (finish) cleaning out the refrigerator yet.

4.1 have to go back home now, because I have______ (leave) my English book.

5. Have you______ (hear) the new song?  It's really good.

6. A bullet______ (hit) him on the leg yesterday.

7. The famous singer is______ (appear) this fall at the Music Festival.

8. Who is playing the______ (leader) in the play?

9. This village______ (water) by deep wells.

10. He was______ (chop) wood for fire.
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单项选择题

根据牙面菌斑的量和厚度计分，用以评价口腔卫生状况和牙周病防治效果

A．个人简化口腔卫生指数
B．牙龈指数
C．菌斑指数
D．龈沟出血指数
E．社区牙周指数
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