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We all know who Benjamin Franklin was. He was a very famous American statesman. He was also the first man to discover electricity. Franklin liked to study and to learn about new things. One day he heard from a friend that something black in colour holds the heat better than something white in colour. Franklin wanted to find out if this was true or not.

There was snow on the ground at the time. So he put two large pieces of cloth over the snow. One piece of cloth was black in colour, the other piece was white. Then he waited until the sun began to shine. After several hours he looked under the pieces of cloth and saw that the snow under the black cloth melted much faster than the snow under the white cloth. This proved to him that the black cloth held the heat better than the white cloth.

Soon after this, people began to wear white hats and white clothes during the summer because they were cooler.

根据短文内容判断正(T)误(F):

1.Benjamin Franklin was only a scientist.

2. One day a friend of his told him something about the relation(关系) between colour and heat.

3. Something black in colour holds heat better than something white in colour.

4.This story happened in summer.

5. People wear white clothes in summer because they know it is cooler.

 

【答案】

1.F

2.T

3.T

4.F

5.T

【解析】

1.由“He was a very famous American statesman”,可以看出,他不仅是个科学家,还是个政治家。

2.从文章的第一段可知,是一个朋友告诉富兰克林黑色比白色吸热。

3.从第二段弗兰克林的实验结论可以看出,本句是正确的。

4.弗兰克林的实验是在雪地里进行的,所以应该是冬天,而不是夏天。

5.文章最后一段给出了明确的解释

 

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