下面哪项不是窝沟封闭的适应证A．患较多窝沟龋B．对侧同名牙有龋

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问题单项选择题

下面哪项不是窝沟封闭的适应证

A．患较多窝沟龋
B．对侧同名牙有龋
C．已充填完好的牙
D．牙面窝沟可疑龋
E．牙面窝沟较深

答案

参考答案：C

解析：已充填完好的牙不是窝沟封闭的适应证。

阅读理解

阅读理解。

The children often play football in the garden and sometimes break Mrs Smith's windows. One

afternoon Mrs Smith is at home and reads a book. In a minute she closes her eyes and goes to sleep. At

that time a little boy knocks (敲) at the door. Mrs Smith opens the door and asks, "Do you break my

window again?"

"Oh, no," says the boy, "your window is open this time and my football is in your room. Can I get it

back, please?"

1. The children often go to the garden _____.

A. to play

B. to fly kites

C. to play football

D. to play basketball

2. The children playing football often break Mrs Smith's_____.

A. doors

B. windows

C. books

D. gardens

3. One afternoon Mrs Smith _____ at home.

A. is writing something

B. is cleaning windows

C. is watching TV

D. is reading

4. A little boy _____ Mrs Smith's door.

A. opens

B. closes

C. knocks at

D. breaks

5. The children's football is _____.

A. in Mrs Smith's room

B. in the garden

C. on the window

D. Mrs Smith's

单项选择题

依据《安全生产法》的规定�生产经营单位与从业人员订立的劳动合同。应当载明保障从业人员劳动安全和（）的事项�以及依法为从业人员办理工伤社会保险的事项。

A.加强劳动保护

B.防止职业危害

C.搞好职业卫生

D.减少环境污染