问答题

在等差数列{an}中，a5=3，a6=一2，则a4+a5+…+a10=__________．

A.

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听力原文：W: Professor Hook was so strange today.
M: I noticed that too. He was talking so quietly and then not giving us any homework at all. Can you believe that?
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(16)
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C．He didn't come to class today.
D．He came to class late today.

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听力原文：M: Sam's voice sounds awful. I could barely hear him. I think he needs to take a few days off.
W: Yes, he' s got a terrible sore throat. The doctor said he shouldn't even attempt to whisper.
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(18)
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B．He needs to see a doctor.
C．He hasn't been taking his medicine.
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C.It's
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