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【单选题】
关于乳牙拔除对继替恒牙胚发育和萌出的影响，下列哪错误的A.
在一定时期内，间隙关闭最多的是上颌第二乳磨牙
B.
牙根形成不足一半时拔除乳牙，萌出可能延迟
C.
上颌间隙关闭的速度比下颌快
D.
上颌间隙关闭主要是间隙远中邻牙向近中移动造成的，而下颌间隙关闭则是间隙近中邻牙远中移动造成的
E.
第一恒磨牙萌出前，第一乳磨牙早失，间隙很少改变
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反馈参考答案：
举一反三
【单选题】听力原文：M: Shall I call a taxi? W: But the grand hotel is only two blocks away. M: Well, you're right. How will the speakers probably go to the hotel?
A.
By taxi.
B.
On foot.
C.
By bus.
【单选题】-- _____________? -- Do you have a toy horse?
A.
What do you want to sell
B.
Shall I help you
C.
What can I do for you
D.
Do you like a toy horse
【简答题】3. I shall answer your question after
class.
【简答题】I shall answer your question after class .
【单选题】I shall answer your question after class. 请指出“shall answer”在句中的成分。
A.
谓语
B.
定语
C.
状语
D.
补语
【单选题】We shall provide such insurance at your cost.
A.
We shall pay for the insurance for you.
B.
You shall pay for the insurance for yourself.
C.
Both of us shall pay for the insurance.
【单选题】I shall be very pleased to answer any questions you may have.
A.
happy
B.
sad
C.
prepared
D.
determined
【单选题】I will answer the teacher’s question when _______.
A.
I ask
B.
I will be asked
C.
asked
D.
I shall be asked
【简答题】【S2】
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