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【单选题】
向100g水中不断加入固体A或改变温度，得到相应的溶液①～⑤．下列说法正确的是（ ） 资料：A的溶解度 温度/℃ 20 30 40 50 60 溶解度/g 37.2 41.4 45.8 50.4 55.2A.
②中A的质量分数最大
B.
③⑤中A的质量分数相等
C.
②④⑤的溶液为饱和溶液
D.
①③④⑤中没有固体存在
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举一反三
【单选题】The visitors, men and women, old and young, had walked for many hours, ______ of them got .very tired, but______ of them would stop to take a rest.
A.
all.., neither
B.
both.., none
C.
all.., none
D.
both.., everyone
【单选题】As there was not much chance to find good jobs in their hometown, many young men now tried to _______ their fortune in cities.
A.
find
B.
find out
C.
seek
D.
look at
【简答题】CPU取指、译码、执行需要一定的时间,这一系列操作的时间称为________________。
【单选题】(句子释义)Too many young men thought life was all play. Those young men would not go far in this world.
A.
They played all day.
B.
They believed life was like a play.
C.
They never strive to achieve a goal.
D.
They were only interested in amusement.
【单选题】Which factor pushed up house prices?
A.
Many young men, who live alone, have increased demand for houses.
B.
Many young men need to rent more houses.
C.
It is easy to apply for a mortgage for young generation.
D.
The number of older people, many of whom live alone, becomes bigger and bigger.
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