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【多选题】
我们说期货交易具有特殊的清算制度,这是指( )。A.
所有的交易者都按照统一规则在指定清算所进行清算
B.
所有的期货合约由清算所进行统一交割、对冲和结算
C.
清算所对所有的买方是卖方，对所有的卖方又是买方
D.
期货交易双方分别同结算所建立起一定的法律关系
E.
期货合同买卖
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举一反三
【单选题】I letters since then, but I haven't finished them yet. [ ]
A.
have written
B.
have been writing
C.
wrote
D.
has been writing
【单选题】24 March Dear Julie, I'm sorry I haven't written for a while, but I've been busy at work and have spent almost all my spare time looking for a flat(公寓). I saw a really nice place this morning--a third...
A.
He goes out with friends.
B.
He takes Japanese lessons.
C.
He looks for a place to live in.
【单选题】将固体 NH 4 NO 3 溶于水,溶液变冷,则该过程的 G , H , S 的符号依次是 ( )
A.
+ - -
B.
+ + -
C.
- + -
D.
- + +
【单选题】I haven't finished my composition. I _____ for two hours and a half. [ ]
A.
have written it
B.
have been writing it
C.
wrote it
D.
am writing it
【单选题】听力原文：W: I haven't written to my parents for almost three months. They must be very angry with me. M: I don't think it is that serious. What will the woman probably do?
A.
She will go home.
B.
She will telephone home.
C.
She will write home.
D.
She won't do anything.
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