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Passage One
What is color Why do some objects look red, others green, others blue
Color is caused by reflected light rays. We see color because objects reflect light. Some thing that is red reflects mostly red light. In the same way, a green object reflects mostly green light. White objects reflect all colors of light. Black objects do not reflect any light.
What happens to the colors of light that are not reflected They are absorbed by the object. The darker the color, the less light is reflected and the more light is absorbed. Light that is absorbed is turned into heat. For this reason, dark-colored clothes are warmer in the sunlight than light-colored clothes.
Things that look black are reflecting （）
A. mostly black light
B. all light
C. many different colors
D. no light

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Passage One
What is color Why do some objects look red, others green, others blue
Color is caused by reflected light rays. We see color because objects reflect light. Some thing that is red reflects mostly red light. In the same way, a green object reflects mostly green light. White objects reflect all colors of light. Black objects do not reflect any light.
What happens to the colors of light that are not reflected They are absorbed by the object. The darker the color, the less light is reflected and the more light is absorbed. Light that is absorbed is turned into heat. For this reason, dark-colored clothes are warmer in the sunlight than light-colored clothes.

Which statement is true according to the passage（）
A. Not all objects reflect light.
B. All objects reflect light.
C. One particular object reflects only one color of light.
D. No objects will reflect all colors of light.

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[单项选择]When jogging, what should one not do with one' s eyes

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[单项选择]When jogging, what should one not do with one's eyes

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[单项选择]What should one do when one intends to learn how to communicate with others

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[单项选择]Why do some people become vegetarians

A. They feel that eating animals is unethical.
B. There are fewer livestock available due to the environmental pollution.
C. The consumption of meat will lead to financial problem.
D. Being a vegetarian is beneficial to the protection of water.

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[单项选择]What can one do if one is going to visit a Japanese in Tokyo

A. One can wait for him at the nearest railway station.
B. One can put on an advertisement to inform him.
C. One can look at the newspaper for his address.
D. One can ask him to draw or send a map.

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