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【多选题】
鄱阳湖拥有江南____、____、______A.
最高贵的鸟
B.
最多姿的水
C.
最诗意的草
D.
最险峻的山
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】I'm sorry you've waited so long, but there will be some time _______ Bran gets back
A.
when
B.
since
C.
till
D.
after
【简答题】What should you do if a machine jams
【单选题】—We've waited for the two singers for two hours. Will they be able to come here? —I'm afraid ____ of them will come today. [ ]
A.
neither
B.
either
C.
both
D.
none
【单选题】—I've not finished with my dinner yet. —But our friends______for us.
A.
waited
B.
to be waited
C.
waiting
D.
are waiting
【单选题】---Did you wait for him long? ---No, I hadn’t waited long _______ he appeared.
A.
unless
B.
until
C.
before
D.
since
【简答题】lf a machine jams, take time to undo the jam or to tell the proper person to attend to it.
【简答题】用定义求下列函数的拉氏变换： (1)f(t)=e -2t (2)lf(t)=2t
【单选题】Bobby: Where's the food I ordered? I've waited for thirty minutes! Waiter: I'm really sorry, but the kitchen is very busy. You'll have it _______. [ ]
A.
already
B.
early
C.
once
D.
soon
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