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【多选题】
关于选择素家族的基本结构,下列描述正确的是[2分]A.
C型凝集素结构域
B.
补体调节蛋白结构域
C.
两条链组成的异二聚体
D.
表皮生长因子样结构域
E.
α,β链共同组成识别配体的结合点
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【简答题】A．11 p.m. of that day. B．11 a.m. of the previous day. C．11 p.m. of next day. D．11 p.m. of the previous day.
【单选题】听力原文：M: A lovely day, isn't it? W: It is. M: It seems it will be a fine all day. W: I think it will be a dry day. There's hardly a cloud in the sky. M: We'll have a heat wave in the afternoon. I'm afr...
A.
Dry and windy.
B.
Fine and dry.
C.
Cloudy and dry.
【简答题】33，1-m very busy the_ w ______day．
【单选题】听力原文：M: A lovely day, isn't it? W: It is. M: It seems it will be fine all day. W: I think it will be a dry day. There's hardly a cloud in the sky. M: We'll have a heat wave in the afternoon. I'm afrai...
A.
Dry and windy.
B.
Fine and dry.
C.
Cloudy and dry.
【简答题】数列【图片】的通项公式是__
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