婴幼儿的气管、支气管的（），不能很好地清除微生物及黏液，易发_爱下问搜题

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问题单项选择题

婴幼儿的气管、支气管的（），不能很好地清除微生物及黏液，易发生感染。

A.黏液腺分泌不足而较干燥

B.黏膜纤毛运动差

C.黏液腺分泌充足

D.选项A和B

答案

参考答案：D

填空题

阅读下面对话，从方框内7个选项中选择5个恰当的句子完成此对话。

A. See you.
B. Yes, of course.
C. How about listening to the music video together after school?
D. That’s a good idea!
E. Let’s make it 6:00 pm under the biggest cherry blossom tree(樱花树).
F. I agree.
G. What’s its name?

A: Hi, Jim! Have you seen the film Frozen!（《冰雪奇缘》）
B: _______小题1:__________ It’s such a wonderful movie.
A: _______小题2:__________ And the theme song is great, too.
B: Sure, but I forget its name. ________小题3:____________
A: Let it go.
B: Oh, yes. The lyrics are fantastic and I love the song that I can sing to.
A: Me, too.
B: ____________小题4:______
A: Good idea! When should we meet?
B: ________小题5:____________.
A:OK, I’ll be there on time. Be there or be square.

选择题

---__________________?

---B-L-A-C-K.

A．Can you spell “black”

B．Spells “black”, please.

C．How to spells “black”

D．How do you spell “black”