未知题型 在等差数列{an}中,a5=3,a6=一2,则a4+a5+…+a10=__________.
未知题型 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?Q: What can be inferred about Professor Hook?(16)A.He usually talks quietly.B.He usually assigns homework.C.He didn't come to class today.D.He came to class late today.
未知题型 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.Q: What does the woman imply about Sam?(18)A.It's harmful for him to use his voice.B.He needs to see a doctor.C.He hasn't been taking his medicine.D.It's difficult to understand him when he whispers.