关于基牙条件的叙述错误的是A．基牙最好是健康活髓牙B．基牙牙冠

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问题单项选择题

关于基牙条件的叙述错误的是

A．基牙最好是健康活髓牙
B．基牙牙冠抬龈高度适当
C．多根基牙的根分叉度越大越好
D．基牙牙槽骨吸收不能超过根长1/2
E．单根牙中固位力最大的为上颌尖牙

答案

参考答案：D

补全对话，情景问答

交际运用。根据对话内容，在空白处填写适当的话语（话语可能是一个句子，也可能是一个短语或一个词），使对话完整。

A: Hello, this is Tom. May I speak to Jack?

B: Yes, speaking.

A: Hi, Jack. I called you just now but nobody answered. 1 ?

B: I went to the barber's.

A: 2 ?

B: Yes. Our teacher said teenagers shouldn't have long hair. By the way, why was the teacher 3 you

this morning?

A: Because I called on my cell phone in the hallway. And she took it away. I think that's unfair.

B: That's too bad. But the school has to have rules, you know?

A: Sure. But my mother had a bad cold and stayed at home alone. 4 her, so I called her up.

B: Maybe if you 5 it to our teacher, our teacher will understand.

1. __________ 2. __________ 3. __________ 4. __________ 5. __________

单项选择题

葡萄胎在清宫时应注意的事项中不包括()

A．应采用负压吸引术

B．必须在输液、备血条件下进行

C．吸宫前充分扩张宫颈

D．催产素静滴应在宫口充分扩大后再应用

E．尽可能取宫腔中央的组织行病检