A green house is a building made of glass which is used for keeping warm when the outside temperature is low. In a similar way there are several gases in the atmosphere (mixture of gases that surround the earth) which trap the heat produced by the sun and prevent it from escaping. These gases are known as “greenhouse gases”. and the way in which they trap heat in the atmosphere is called the “greenhouse effect”. This is not simply air pollution. Most of the main greenhouse gases exist naturally in small amounts in our atmosphere, and without them the earth would be 30 degrees colder and human life would not exist. In other words, the greenhouse effect is a natural course which is to some degree helpful to us.
The problem is that in the last century and a half, we have been putting too many of these gases into the earth’s atmosphere by burning large quantities of coal and oil and by cutting down forest. The rapid increase in greenhouse gases is making the world warmer. The world’s temperature has already gone up by half a degree this century, and the sea level has risen by 10 centimetres. If the amount of carbon dioxide in the atmosphere doubles, there will probably be a rise in the earth’s temperature of between I and 4℃;. This may seem a small increase, but it would be enough to cause major changes in geography and agriculture. Large areas of the world would be flooded, and some areas would become dry and unable to produce crops. It is important, too, to consider that there may be a delay of about 30 years in the greenhouse effect. This means that we are probably experiencing only now the effect of the gases put into the atmosphere before the 1960s. Since then, our use of these gases has greatly increased.
1. According to the passage, we can know “greenhouse effect” means_______.
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A．the way in which gases are used for keeping plants warm |
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B．a natural course that is to a certain degree useful to us |
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C．the way “greenhouse gases” trap heat on the earth |
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D．the whole course in which greenhouse gases prevent heat |
2. If there were no greenhouse effect,_______.
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A．all plants would not grow on our planet |
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B．soil would reduce the temperature by 30 degrees |
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C．man would breathe the cleaner air |
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D．people couldn’t live in the earth |
3. Which of the following is not true?
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A．Burning too much coal and oil produces lots of greenhouse gases. |
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B．It has become warm on the earth now than in the past. |
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C．Gases put into the atmosphere now will affect the earth years later. |
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D．The temperature in a greenhouse is as high as that in the atmosphere. |
4. Suppose the earth’s temperature rose by 3 degrees, _______.
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A．great harm will be done to mankind |
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B．the sea level would go up by 10 centimeters |
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C．all the land in the world would be flooded |
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D．crops would be unable to grow on the earth |
5. This passage mainly deals with ________.
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A．the concept (概念) and the harm of the greenhouse |
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B．the relation between greenhouse gases and man |
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C．the concept and change of greenhouse effect |
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D．the effect of the rise of the earth’s temperature |
A long time ago, before there was any money (coins or paper money), people got the things that they needed by trading or exchanging. Salt was one of the first items used to exchange for other items. Later, some of the common things that were used for exchanging were tea leaves, shells, feathers, animal teeth, tobacco, and blankets. Around 3000 BC, barley, a type of grain, was used for exchanging.
The world’s first metal money was developed by the Sumerians who melted silver into small bars all weighing the same. This was around 1000 BC. About three hundred years later, people started using coins as official money.
Around 640 BC, people in the ancient kingdom of Lydia ( which was in Turkey) created special coins of exact with and purity (纯度). They were made of gold and silver and were stamped with a lion’s head.
Later, other empires such as Greece, Persia, and Rome adopted the concept of coins and started developing their own in many different shapes and different metals.
Around the year 1000, the Chinese started using paper money. The Chinese were the first to use paper money. The Europeans discovered this thanks to Marco Polo who went to China in 1295. the Chinese had different values for the paper notes which were made by the Chinese government.
Around 1661, Sweden became the first European country to make paper money. Until 1850, the Spanish dollar was the coin most widely used throughout the world.
1.What is the best title for this passage?
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A． The history of money |
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B． How people traded in the past |
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C． The invention of paper money |
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D． The use of coins around the world |
2.We learn that before coins and paper money were used, _____.
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A． barley had always been used for exchanging |
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B． only a few people knew how to trade with others |
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C． salt was the most widely used item for exchanging |
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D． many kinds of things were used for exchanging |
3.According to the passage, when did people start using coins as official money?
A. Around 1300 BC. B. Around 1000 BC.
C. Around 700 BC. D. Around 640 BC.
4.The underlined word “adopted” in Paragraph 4 probably means “____”.
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A． replaced |
B． changed |
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C． accepted |
D． invented |
5.Which of the following countries first started to use paper money?
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A．Spain |
B．China |
C．Sweden |
D．Lydia |
阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答卷标号为1-10的相应位置上。
Once there lived a rich man __1_ wanted to do something for the people of his town. _2__ first he wanted to find out whether they deserved his help.
In the centre of the main road into the town, he placed __3__ very large stone. Then he __4__(hide) behind a tree and waited. Soon an old man came along with his cow.
“Who put this stone in the centre of the road？” said the old man，but he did not try to remove the stone. Instead, with some difficulty he passed around the stone and continued on his way. __5__ man came along and did the same thing; then another came, and another. All of them complained about the stone but not tried to remove 6_. Late in the afternoon a young man came along. He saw the stone，_7__(say) to himself: “The night _8_(be) very dark. Some neighbors will come along later in the dark and will fall against the stone.”
Then he began to move the stone. He pushed and pulled with all his 9__(strong) to move it，only __10__(find) a bag of money under the stone. Imagine how surprised he was!
阅读下面短文，掌握其大意，然后从1—15各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。
First of all, successful language learners are independent learners. They 1 their own way to learn the language. Instead of 2 for the teachers to explain, they try to find the pattern and rules for themselves. They are good 3 who look for clues and form their own conclusions. When they guess wrong, they guess again. They try to learn from their mistakes.
Secondly, 4 language learners are active in 5 , therefore, they do not wait for a chance to use the languages, and they look for such a chance. They find people who speak the language and let those people 6 them when they make a 7 . They will try anything to communicate. They are not afraid to repeat what they hear or to say 8 things which sound weird. They are willing to make mistakes and try again, when communication is difficult. They can accept information that is 9 or incomplete. It is more 10 for them to learn to think in the language than to know the 11 of every word.
12 successful language learners are learners with 13 . They want to learn language because they are interested in the language and the people who speak it. It is necessary for them to learn the language in order to 14 with these people and to learn from them. They find it easy to practice using the language 15 because they want to learn it.
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Keeping your body your mental health.
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A．is benefit with |
B．was beneficial to |
C．have beneficial to |
D．is beneficial to |
I haven’t been aware his attitude my promation.
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A．of;towards |
B．off;to |
C．on ;about |
D．with;in |
