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听力原文：M: AS usual，the lecture hall is in a complete mess this afternoon. Newspapers，soda cans，used tissues， all of them，are just thrown all over the floor. I can't understand how people can be so thoughtless. W: Well，your professor should have the authority to get something done about it. Q: What does the woman suggest the man do? (19)A.
Tell his professor about the condition of the lecture hall.
B.
Organize a team of students to clean the lecture hall.
C.
Find out who has been making a mess.
D.
Wait to see if the problem will be solved.
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C.
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D.
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【简答题】每克糖、脂肪、蛋白质供给人体的能量依次为 KJ 、 KJ 和 16.7KJ 。
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