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What is colour? Why do some of the things around us look red, others green, others blue?
Colours come from reflected（反射）light. We can see colours because some of the things reflect light. Something is red, because it reflects most of the red light. In the same way, if something is green, it reflects most of the green light. If something reflects all light, it is white. If something doesn't reflect any light, it is black.
Some light is not reflected（不被反射）. It is taken in（被吸收）and turned into heat（变成熟）. If the colour is darker, it reflects less light, and takes in more light.
(1) Colour is really ________.
[
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A ．something itself |
B ．the light around something |
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C ．reflected light |
D ．your eyes |
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(2) Something looks red because it ________.
[
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A ．reflects most of the red light |
B ．takes in most of the red light |
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C ．reflects less red light |
D ．takes in only red light |
(3) Something looks black because it reflects ________.
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A ．most of the black |
B ．all light |
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C ．many different colours |
D ．no light |
(4) When light is taken in, it is ________.
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A ．turned into heat |
B ．kept at once |
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C ．reflected later |
D ．both B and C |
(5) In the sun, the warmest clothes must be ________.
[
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A ．white |
B ．yellow |
C ．dark-coloured |
D ．light-coloured |
A tourist comes out of the airport. There are a lot of taxis, but the tourist asks every taxi-driver his name. He takes the third taxi. It costs $5 from the airport to the hotel. “How much does it cost for the whole day?” the tourist asks.“$100,” says the taxi-driver. This is very expensive, but the tourist accepts the price.
The taxi-driver takes the tourist everywhere. He shows him all the monuments and all the museums. In the evening they get back to the hotel. The tourist gives the taxi-driver $100 and says, “What about tomorrow?” The taxi-driver says, “Oh, OK. If that's the price, that is the price. See you tomorrow.” The taxi-driver is very pleased.
The next day the taxi-driver takes the tourist everywhere again. They visit all the museums and all the monuments again. And on the second evening they go back to the hotel. The tourist gives the taxi-driver another $100 and says，“I'm, going home tomorrow.” The taxi-driver is sorry. He likes the tourist and, above all, $100 a day is good money. “So you are going home. Where do you come from?” he asks.
“I come from New York.”
“New York!” says the taxi-driver. “I've a sister in New York. Her name is Susannah. Do you know her?”
“Of course I know her. She gave me $ 200 for you.”
(1) The tourist is ________.
[ ]
(2) The tourist asks every driver his name because ________.
[ ]
A．he is afraid of being cheated
B．he knows one of the taxi-drivers
C．he knows all the taxi-drivers
D．there is a friend of his among the taxi-drivers
(3) Why is the taxi-driver very pleased with the tourist?
[ ]
A．None but the tourist agrees to the price given without argument with him.
B．His sister knows the tourist.
C．His sister has brought so much money to him.
D．He wants to be the guide of the tourist.
(4) We can conclude that ________.
[ ]
A．the tourist will give the taxi-driver another $ 200
B．the tourist makes fun of the taxi-driver
C．the tourist will give the taxi-driver half of the sum
D．the taxi-driver insists that the tourist should pay him another $ 200.
查看习题详情和答案>>根据句意，从所给词语中选用其适当形式填空．每词只准用一次．
My friend's name
1 (be) Zhao Xiaolong．He 2 (be) thirteen years old．He's a student．He 3 (study) in a middle school．He 4 (go) to school five days a week．He 5 (like) English very much．There 6 (be) three people in his family．They 7 (be) his father, his mother and himself（他自己）．He 8 (not have) any brothers or sisters．His father is a worker, and his mother is a worker, too．They 9 (work) in the same factory．They 10 (come) from Shandong, but they live （生活）in Beijing． 查看习题详情和答案>>短文填空：先通读下面的短文，然后根据短文内容和所给首字母，在空格内填入一个适当的单词。使短文完整。
On Thanksgiving Day．About 88 percent of Americans car turkey．But one l 1 turkey not only survives but also becomes famous! Every year, turkey farmers p 2 a turkey to the U．S．president．However the president does not e 3 this turkey．But gives in a “pardon”．The turkey is s 4 to Florida for a Thanksgiving parade．Then it lives on a farm for the r 5 of its life．
Turkeys come from North America and have been part of American culture for c 6 ．Benjamin Franklin even wanted the turkey, i 7 of the bald eagle, to be America's icon．
Turkeys living on farms are large birds that cannot fly．But w 8 turkeys are quite fast．They can fly at a s 9 up to 88 kilometers per hour．They can also run as fast as 40 kilometers per hour．
Turkeys don't have ears．They h 10 with a snood(肉垂)above their beaks．But their hearing is five times better than human's．
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