单项选择题

Speaker A：Good afternoon，Im here for my four oclock appointment with Dr.Brown.Speaker B：（）

A．Nice to see you.I’m Dr.Brown’s secretary.
B．Why don’t you have a seat for a moment？
C．Excuse me，when did you make this appointment with him？
D．I’m sorry.He will be busy the whole afternoon.

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多项选择题

铀矿勘探、开采和加工的固体废物主要有（）。

A.采矿废石
B.选矿尾矿
C.水冶尾矿
D.浸出渣
E.废水中和沉淀物
F.其他沉积物、污染废旧设备器材和材料、污染垃圾

单项选择题

Speaker A：Doctor Smith is engaged on Wednesday．Would you like to come on Thursday？Speaker B：（）

A．Thursday would be fine．
B．See you then．
C．Thank you very much．Goodbye．
D．It’s very kind of you．