What is color? Why do some of the things around us look red, some green, others blue? Colors are really made...

题型：阅读选择题类：常考题难易度：普通

    What is color? Why do some of the things around us look red, some green, others blue?
    Colors are really made by deflected (反射) light. We see color because most of the things reflect 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 it doesn't reflect any light, it is black.
    Some of the light is reflected and some is taken in (吸引) and turned into (变成) heat (热能).The darker the color is, the less light is reflected, the more light is taken in. So dark-colored clothes are warmer in the sun than light-colored clothes.

（1）、When something reflects light, we can _____.

A、see its color B、see its heat C、not see its color D、see nothing

（2）、Something looks white because it reflects _____.

A、some light B、no light C、all light D、most light

（3）、the dark-colored clothes are warm because ____ is taken in.

A、more light B、less light C、more color D、less color

（4）、In summer ______ make people feel cool.

A、dark-colored clothes B、red-colored clothes C、green-colored clothes D、light-colored clothes

（5）、What's the best title(标题)of this passage( 短文 )?

A、Dark color B、Color C、Heat D、Clothes

举一反三

Taking away a city's rubbish is a big job. Every day trucks come into a city to collect it. Most rubbish is made up of things we can't eat or use. If we kept these things we would soon have a mountain of rubbish.
In some cities the rubbish is collected and taken outside of the city to a dump(垃圾站). Often the city dump is placed where the ground is low or there is a big hole. The kitchen rubbish is broken into small pieces and sent into the sewage system. The sewage system takes away the used water from toilets, bathtubs(澡盆) and other places.
To keep mice and flies away, some earth is used to cover the newly dumped rubbish. Later, grass may be planted on the rubbish-filled land. Finally, a house or a school may be built there, and then you'd never know that this had once been an old rubbish dump.
In other cities the rubbish is burnt in special places. The fire burns everything but the metal. Sometimes the metal can be used again in factories where things are made of metal. The food parts of rubbish are put in special piles where they slowly change into something called humus(腐殖土), which looks like black earth. It is rich with kinds of things that feed plants and help make them grow.

    I am a professor of sports and exercise so I often deal with nervousness in my research with sports people. Actually, most people experience nervousness at some time or another.
    If you are feeling anxious, my advice is to first find the cause or causes. Make s list of those things that are making you nervous and work out which ones you can do something about. Focus all of your efforts on managing the causes that you can control.
    Most people cannot tell the difference between controllable(可控制的) and uncontrollable causes, so things they can't control become a big reason for nervousness. Dealing with this is very important if people want to keep a healthy mind.
    Simply try to accept the uncontrollable causes of nervousness. You might be worried about the weather on a big day, an accident or an attack on the train, or perhaps just things that other people are doing at work. The results may be very important but there is still no use worrying because you can't control any of these things. Accept that you can't control everything. Once you understand this, it becomes easier not to worry.
    If a situation, such as swimming, is causing you to be anxious, try to face it as often as possible so that you can get used to it.
    It can often help to think about yourself doing the thing that make s you nervous—then close your eyes and imagine it going well. Imagine how the flight or job interview is going to happen so that you can get used to it. This will help you understand that the thing you fear most is probably not going to happen.

阅读下面短文, 从每小题所给的A、B、C、D四个选项中选出最佳选项。

Wikipedia is an online free encyclopedia. There are more than 38 million articles about society, history, culture, music, science, technology, geography and so on. On this website, people can find articles about almost everything in the world. Wikipedia has also developed 292 language versions for people to read in their own languages.

Jimmy Wales and Larry Sanger started this encyclopedia project on 9th March, 2000. It was called Nupedia at first. And all the articles were written and checked by experts. Wales thought that the website should be a place where its users could not only find information but also share what they knew. So they tried to use a wiki system（wiki is a Hawaiian word "wee kee wee kee" which firstly meant "quick"）. On 10th January, 2001, they began a new project to improve Nupedia. On 15th January, 2001, the new online encyclopedia named Wikipedia was set up. Wikipedia achieved a great success.

According to the Alexa Traffic Rank report on 22nd May, 2016, Wikipedia is the seventh most popular website in the world. Every single user helps to make this popular free encyclopedia.

阅读短文，回答问题。

Scientists are trying to make the deserts into good land again. They want to bring water into the deserts, so people can live and grow food. They are learning a lot about the deserts. But more and more of the earth is becoming desert all the time. Scientists may not be able to change the desert in time. Why is more and more land becoming desert? Scientists think that people make deserts. People are doing bad things to the earth. Some places on the earth don't get much rain. But they still don't become deserts. This is because some plants are growing there. Small green plants and grass are very important to dry places. Plants don't let the hot sun make the earth even drier. Plants don't let the wind blow the dirt away. When a little bit of rain falls, the plants hold the water. Without plants, the land can become a desert much more easily.

阅读短文回答问题。

阅读理解

One morning while Officer Vogel was on his coffee break in a restaurant, a man ran in a yelled. "Officer! A little kid is driving a car down the street!"

He ran out at once and saw a car going slowly--about 25 miles an hour--but it was going very straight. He jumped into his police car and followed it. When the car was stopped, Officer Vogel looked inside. The driver was a little boy. His name was Rocco Morabiro and was 5. In the back seat was his two-year-old sister. Both children wen crying.

"I want my mummy!" the boy cried." But she can't get here. I have the car." Then he had an idea." Just a minute." He told Officer Vogel." I can drive. I'll go to get her."

"No!" Officer Vogel said. "You stay with me!" Then he drove them to the police station and he called their mother. They had many questions for Rocco. The first question was: "Where did you get the car keys?"

Rocco said. "From the top of the refrigerator." At seven that morning Rocoo's father was work and his mother was sleeping, Rocco saw the keys on top of the refrigerator. He climbed on a chair, and took the keys.

Rocco got into the car and started the engine (引擎). When Rocco's sister heard the engine she ran to the car and cried. She wanted to go with him.

It was 7 a. m.—rush hour—so there was much traffic. Rocco drove one mile in heavy traffic. Then Officer Vogel stopped him.

Newspapers and TV stations heard about Rocco, and a lot of reporters went to his house. Areporter asked Rocco, "What do you want to be when you grow up?"

"A truck driver," he said, smiling.

阅读短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

Autumn in Tibet is very beautiful because there are many fresh and bright colours everywhere.

In north Tibet, one can travel several hundred kilometres by car and cannot see even a person. No one can be found in the north of Shuanghu-only treeless fields and grasslands. Warm autumn days bring life to all of nature. Wild animals become active, and Tibetan antelopes like to play near the lakes. When they run, sometimes they can reach 80 km an hour, leaving the hungry wolves far behind.

Autumn in south Tibet is very different from that in north Tibet. Mount Qomolangma in southwest Tibet, the highest mountain on Earth, is world-famous for its beauty. It is over 8, 000metres high. There are over 2,300 kinds of plants and about 300 different kinds of wild animals on Mount Qomolangma.

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