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【判断题】
酒的主要成分是甲醇。A.
正确
B.
错误
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举一反三
【单选题】听力原文：The birthplace was to open at 10 a. m. It was 9: 30 and already the pilgrims had formed a queue. I asked a lady from Ohio why she had come. 'For Shakespeare, 'she said. 'Isn't that why you came?'...
A.
U. S.A.
B.
Europe.
C.
Ohio.
D.
His hometown.
【简答题】计算机网络的安全威胁有哪些?(答案用分号隔开)
【简答题】计算机网络的安全威胁有哪些？
【简答题】嘌呤核苷酸从头合成的原料有( )、 ( )、( )及( )等,合成的限速酶是( ),第一步合成的是( ),重要的中间产物是( ),后者与Asp作用生成( ) ,另外还可脱氢并与Gln作用生成( )。
【单选题】Man: The train was supposed to arrive at 9 oclock. Woman: Nine oclock! But its already 9: 30. Question: What does the woman mean?
A.
The train is always late.
B.
She's sorry it's already 9: 30.
C.
The train is arriving at 9: 30.
D.
The train is already late.
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