皮皮学，免费搜题
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【多选题】
细胞膜型免疫分子包括A.
MHC
B.
CD分子
C.
补体
D.
细胞因子
E.
SmIg
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举一反三
【简答题】This is all__________I know about the accident. 2.He is the only man __________ I can find for the work. 3.You must watch everything carefully __________ the teacher does in class. 4.Is the house ____...
【单选题】But if we sell you our land, you must remember that the air is preciousto us, that the air shares its spirit with all the life it supports.
A.
sacred
B.
worthless
C.
invaluable
D.
genuine
【单选题】听力原文：W: Do you have a seat for the concert tomorrow? M: No seat at all, but we sell standing-room tickets two hours before the performance. Q: What does the man mean? (13)
A.
It is too late for the man to go to the concert.
B.
The man must wait for two hours to buy a ticket.
C.
People have already been standing in line for two hours.
D.
The man can buy a standing-room ticket tomorrow.
【单选题】听力原文：M: Do you have a seat for the concert tomorrow? W: No seats at all, but we sell standing-room tickets two hours before the performance. Q: What does the woman mean? (19)
A.
It's too late for the man to go to the concert.
B.
The man must wait for two hours to buy a ticket.
C.
People have already been standing in line for two hours.
D.
The man can buy a standing-room ticket tomorrow.
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