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【单选题】
已知I 2 遇到淀粉溶液显蓝色，将淀粉、KI混合液装在半透膜中，浸泡在蒸馏水的烧杯中，过一段时间后，取杯中液体进行实验，能证明半透膜有破损的是 [ ]A.
加碘水变蓝色
B.
加碘水不变蓝色
C.
加AgNO 3 溶液产生黄色沉淀
D.
加入氯水变蓝色
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【单选题】I wonder if you realize just how many others share your problem. It is so common for people to distort the truth about themselves. Sometimes its just an invented excuse when youre late for something o...
A.
glowing up with
B.
living with
C.
seeking
D.
sticking to
【单选题】_________pieces of bread _______in the box?
A.
How many; is there
B.
How much; is there
C.
How many; are there
D.
How much; are there
【单选题】听力原文：Q: How many people will attend the meeting? (15)
A.
About 10 people.
B.
Up to 20 people.
C.
90 people.
D.
120 people.
【简答题】风险的三要素是 、风险事故、和 。
【简答题】风险的三要素是 、 和 。
【单选题】听力原文： How many men do housework? Recently a European commission tried to find out people's ideas and reactions to the women's movement. As part of the survey, they asked many men and women the questio...
A.
In Britain.
B.
In Italy.
C.
In Denmark.
D.
In Europe.
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