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【单选题】
下列四种形式的循环设计中，循环次数最少的是( )。A.
a＝5:b=8 Do a＝a+1 Loop While a＜b
B.
a＝5:b＝8 Do a＝a+1 Loop Until a＜b
C.
a＝5:b＝8 Do Until a＜b b＝b+1 Loop
D.
a＝5:b＝8 Do Until a＞b a＝a+1 Loop
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【单选题】Man: My brother is coming this weekend, and I was thinking the three of us could go out to dinner Saturday night. Any suggestions? Woman: It's up to you. I don't know the restaurants here that well. Q...
A.
She can make a reservation at the restaurant.
B.
The man should decide where to eat.
C.
She already has plans for Saturday night.
D.
The man should ask his brother for suggestions.
【简答题】酶是一种特殊的、具有催化作用的蛋白质,在酶的溶液中加入大量饱和硫酸铵时会产生沉淀, 这种现象称为() 。
【单选题】听力原文：W: My brother is coming this weekend and I thought three of us could go out to dinner Saturday night. Any suggestions? M: It's up to you. I don't know the restaurants around here that well. So yo...
A.
His brother is coming.
B.
He could go out to dinner.
C.
He know a better place to go.
D.
The woman may make the decision.
【单选题】— Will you stay for lunch? — Sorry, I ______. My brother is coming to see me.
A.
needn’t
B.
can’t
C.
shouldn’t
D.
mustn’ t
【单选题】—Will you stay for lunch? —Sorry, ____________. My brother is coming to see me.
A.
I mustn’t
B.
I can’t
C.
I needn’t
D.
I won’t
【简答题】My brother is coming ____ Monday.
【单选题】My brother’s birthday is coming.I’m going to buy a present him.
A.
to
B.
with
C.
in
D.
for
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