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问题 单项选择题

患者，12岁，全口牙齿均呈均匀灰色，个别牙齿表面釉质缺损。

临床诊断可能是

A．氟牙症
B．釉质发育不全
C．四环素牙
D．先天性梅毒牙
E．遗传性乳光牙本质

答案

参考答案：C

补全对话，情景问答

补全对话，每空格限写一个句子。

A: Where have you been last night, Jane?

B: I have been to the cinema to see a movie.

A: (1)__________________________________?

B: The Lion King.

A: (2)__________________________________?

B: Yes, it's a cartoon.

A: (3)__________________________________?

B: It's about a brave young lion's experience to become a lion king.

A: It must be very interesting. By the way, what kind of cartoons do you like best?

B: (4)__________________________________.

A: Me, too. A happy ending is the most important thing for me to choose a cartoon.

B: Another cartoon will be on at the Student Cinema this coming weekend. Shall we go to see it together?

A: (5)__________________________________.

B: All right. See you next weekend.

A: See you.

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单项选择题

中国最早设置的民族自治区（）。

A.内蒙古自治区

B.新疆维吾尔自治区

C.宁夏回族自治区
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