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【多选题】
关于高分子溶液的正确叙述为A.
高分子化合物的溶解由有限溶胀与无限溶胀两个过程完成
B.
高分子化合物一般在冷水中较热水中更胀，故配制高分子溶液不应加热
C.
无限溶胀一般相当缓慢，搅拌或加热可加速完成
D.
改变温度或pH可使高分子溶液产生胶凝，形成凝胶
E.
高分子溶液的胶凝是一个不可逆过程
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举一反三
【单选题】Which of the following is NOT TRUE according to the passage? 细节题
A.
We will be in trouble if our far cells become less responsive to insulin.
B.
More and more studies are done to study the link between sleep and weight.
C.
More than 20% of Americans are not getting enough sleep.
D.
Fat cells are there to help us maintain a good health.
【简答题】The ______(细节)of the plan are still being worked out.
【单选题】What is the purpose of this passage? (细节题)
A.
To introduce how the Hydrapulper deals with garbage.
B.
To tell what the writer thinks of the idea of getting rid of solid wastes.
C.
To explain why garbage should be recycled.
D.
To describe an experiment in which a Hydrapulper is used.
【单选题】Why did Tim find a part time job?
A.
To have more experience
B.
To help his family go through financial difficulties
C.
To help his father in businee
【单选题】Why did Tim find a part-time job?
A.
To have more experience.
B.
To help his family go through financial difficulties.
C.
To help his father in business.
【单选题】使用数据类型名称转换方法将双精度浮点型变量转换为单精度浮点型变量，以下正确的是（ ）
A.
double c=1.5; b=(float)c;
B.
int c=1.5; b=(float)c;
C.
float c=1.5; b=(double)c;
D.
string c="1.5"; b=(float)c;
【简答题】The full d of the agreement haven't been made public. ( 详情；细节 )
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