核糖与核酸都不含有的元素是（）①O ②N ③S ④P

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核糖与核酸都不含有的元素是（）
①O ②N ③S ④P

A：②③④

B：③

C：①③

D：②④

上一题下一题 0.0难度选择题更新时间:2019-02-15 10:38:51

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B

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补全对话。从对话后的选项中选出能填入空白处的最佳选项。（其中有两项是多余的。）
A: Welcome to I COOL, YOU COOL, madam. How can I help you?
B:____ .
A: This way, please. These are the latest fashion.____
B: It looks cool. But I don't like bright green.
A: We've got many colors: pink, grey, dark red and yellow.____ .
B: Pink. Could you show me the light pink one?
A:____ . And it's very thick.
B: I like it.____ .
A: It was 100 dollars but now it is only 50 dollars.
B: That's a great price. I'll take it.

A. What's your favorite color?
B. How much is the bright green one?
C. Certainly! It's very beautiful, isn't it?
D. How much does it cost?
E. I want to buy a coat.
F. Yes, I think it's my size.
G. What do you think of this one?

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