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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.
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从下面方框中选择适当的选项填入短文中，使短文通顺、完整。选项中有两项是多余的。
| A．but B．closed C．and D．meaning E．quiet F．broke G．awful H．heart I．in J．wonderful K．find out L．well |
Once a famous violinist gave a concert in New York．Many people went there to enjoy the music．When he was playing with all his 1 ，something went wrong．One of the strings（弦） on his violin 2 ．People thought that，he would stop playing， 3 he didn't．Instead，he waited a moment， 4 his eyes and then continued playing．He played as 5 as before．He changed the music a bit．It sounded 6 even though he made it with only three strings．When he finished，there was silence 7 the room．Then people stood up and cheered．He smiled，and then he said in a 8 voice，"You know，it is the artist's task to 9 how much music you can still make with what you have left．"
What powerful words! They have stayed in my mind ever since I heard the words．Perhaps that is the 10 of life--not just for artists but for all of us．So our task in this fast-changing world is to "make music" with what we have．
查看习题详情和答案>>animals.
In one test the old scientist put a monkey in a room where there were several boxes. Some boxes were inside
other boxes. One small box had some food in it. The scientist wanted to watch the mokey and to find out how
long it would take the monkey to find the food. The scientist left the room, he waited a few minutes outside the
door. Then he got down on his knees and put his eye to the keyhole. What did he see? To his surprise, he found
himself looking into the eye of the monkey. The monkey was on the other side of the door and looked at the
scientist through the keyhole.
( ) 1. The scientist wondered if the monkey was cleverer than other animals.
( ) 2. In one test the scientist put a monkey into a box where there was some food.
( ) 3. After the scientist left the room, the monkey began to eat food.
( ) 4.Tthe scientist looked at the monkey through the keyhole with his eye.
( ) 5. To the scientist's surprise, the monkey put its eye to the keyhole.
One day a man went to the house of a friend. He took some bread for his lunch because his friend lived far away. As he went along,he thought to himself that his friend would give him something nice to eat. So he threw（扔）the bread away. He went on and at last he came to a river. It was very wide, and there was no boat. The man couldn't get across（渡过）the river. He waited and waited but no one came. The sun began to set. The man had to come back home. On his way home he felt hungry and wanted very much to have something to eat. But he didn't have anything. Suddenly he saw some dry dusty（满是灰尘的）bread on the side of the road. He was very happy. He picked the bread up and ate it.
1. A man went to visit a friend one day.
（ ）
2. He threw away the bread because it was not nice.
（ ）
3. He didn't eat anything for his lunch.
（ ）
4. His friend lived on the other side of the river.
（ ）
5. He didn't meet his friend because his friend wasn't at home.
（ ）
查看习题详情和答案>>Naught worked in an office, and he did a lot of important arid difficult work, but then he began to forget things and this made his work very difficult. One day he said to himself,
“I'm going to see Dr. Martin about this.”He waited in the doctor's waiting room with the other patients, and then the nurse said to him,
“You can go in and see Dr Martin now.”Mr. Naught hurried into Dr. Martin's office, and the doctor said,
“Please sit down, Mr. Naught. What can I do for you?”“Oh, doctor,”said Mr Naught,“it's terrible. I can't remember anything little longer than half a minute, and it's making my work very difficult. What can I do? Can you help me?”
The doctor said,
“When did this start, Mr.Naught?”“When did what start?”Mr. Naught asked.
根据短文内容判断正（
T）误（F）。(1) Mr.Naught did a little important and difficult work.
( )
(2) Dr.Martin asked Mr Naught to his office.
( )
(3) Mr.Naught wanted to get better soon.
( )
(4) Mr.Naught could remember something for haft a minute.
( )
(5) Mr.Naught knew what Dr. Martin had asked about.
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