吸毒者易产生多种并发症，除毒品直接损害作用外，主要是由于（）_爱下问搜题

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问题多项选择题

吸毒者易产生多种并发症，除毒品直接损害作用外，主要是由于（）系统受到了损害

A.消化

B.呼吸

C.神经

D.免疫

答案

参考答案：A, B, C, D

补全对话，情景问答

情景交际。从方框中选择适当的句子，补全对话。(其中有两项是多余的)

(D=Doctor, W=Woman)

A. Do you often have a headache?
B. Then you will get better soon.
C. I'm sorry to hear that.
D. Yes, I sleep very well.
E. You shouldn't stay up late.
F. No, I never have breakfast.
G. I don't feel well.

D: What's the matter, madam?
W:    1    I cannot do any work, doctor.
D:    2
W: No, I don't have a headache.
D: Do you sleep well at night?
W:    3
D: Do you have breakfast every morning?
W:    4    And I have a little food for lunch  and supper because I want to keep slim (苗条).
D: Oh, I see. It's not serious. You should have three meals a day and eat enough food for every meal. And
     you'd better do some exercise every day.    5
W: Thank you, doctor.

解答题

食堂买来面粉450千克，比买来的大米少20%，买来大米多少千克？