高中英语阅读理解（科技类）(共12页).doc

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阅读理解（科技类）
ils is the secret. Some of the warm water changed into vapor. This meant that less of the warm water was left to be frozen. And so the warm water froze faster than the cold water even though it had a greater temperature drop to make.
1. Hundreds of years ago, Sir Francis Bacon found _______.
A. the temperature of warm water drops faster than that of cold water
B. warm water is heavier than cold water
C. warm water has the same temperature as cold water
D. warm water is not as useful as cold water
2. What Sir Francis Bacon said was right, but people didn't believe him until _______.
A. late in the 20th century B. early in the 20th century
C. three years ago D. late in the 19th century
3. Leave a pail with warm water and another pail with cold water in the same low temperature, you’ll find that _______.
A. cold water freezes first
B. warm water turns into ice before cold water
C. warm water and cold water freeze at the same time
D. much of cold water is changed into air.
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4. Why does warm water freeze first in the same freezing weather?
A. Because some of the warm water turns to vapor, the amount(数量) becomes less than that of cold water.
B. Because warm water is lighter than cold water.
C. Because the temperature of warm water is lower than that of cold water.
D. Because cold water freezes with more difficulty than warm water.
Passage Three
If you do not use your arm or your legs for some time, they become weak; when you start using them again, they slowly become strong again. Everybody knows that. Yet many people do not seem to know that memory works in the same way. When someone says that he has a good memory, he really means that he keeps his memory in practice by using it. When someone else says that h