根尖发育完成的恒牙完全脱位再植后，何时最适宜行根管治疗？（）

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问题单项选择题

A.1～2周

B.3～4周

C.4周后

D.X片显示根尖周有密度减低影时

E.再植后即刻

答案

参考答案：B

补全对话，情景问答

补全对话。

Kate: Mom, I can't (1)_______ my socks. Do you know (2)_______ they are?

Mom: Are they (3)_______ your cupboard?

Kate: No, they (4)_______ there. And they are not in the drawer.

Mom: How (5)_______ the desk? Aren't they (6)_______ the desk?

Kate: No, I can't see them there.

Mom: Maybe (或许) they are (7)_______ the bed.

Kate: No, only (只有) shoes are under the (8)_______.

Mom: (9)_______ they are. You see, they are in your backpack next (10)_______ your pencil case.

单项选择题

能见度的目标物大小要适度，视角以（）度之间为宜；目标物的仰角最好接近水平，一般不宜超过（）度。

A.0.5--3.05

B.0.5--5.05

C.0.5--3.06

D.0.5--5.06