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【单选题】
脱臼是指A.
关节处骨折
B.
关节头从关节窝脱出
C.
关节囊拉伤
D.
关节软骨脱落
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【简答题】Do you still get free plastic bags from the supermarkets? Things have changed. China has banned（禁止）free plastic bags in shops and supermarkets，and people have to pay for using plastic bags. The rule ...
【单选题】—Why does the lake smell terrible? —Because large quantities of water .
A.
have polluted
B.
is being polluted
C.
has been polluted
D.
have been polluted
【简答题】A．He is not very knowledgeable. B．He is respectful of his students. C．He speaks too much in the class. D．He has traveled extensively.
【判断题】Going Dutch in a blind date is a good idea is a proper central idea expression.
A.
正确
B.
错误
【简答题】计算机病毒的主要特点是（）、寄生性、隐蔽性、触发性和破坏性。
【单选题】在极谱分析中,通氮气除氧后,需要静置溶液半分钟,其目的是
A.
防止在溶液中产生对流传质
B.
有利于在电极表面建立扩散层
C.
使溶解的气体逸出溶液
D.
使汞滴周期恒定
【单选题】_____ he’s only been learning English for a year, he speaks it very well.
A.
Considered
B.
Considering
C.
Having considered
D.
To consider
【判断题】Blind date is a date where the people involved have not met each other previously. The match could have been arranged by mutual friends or bya dating system.
A.
正确
B.
错误
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