题目内容

Look! There are thousands of people waiting to buy tickets home in the railway station. Each time when Spring Festival comes, buying tickets of train trip would be very hard. And things seem to be getting worse and worse, although we have greatly increased the mileage of railway network and speeded up trains. Why? It’s because too many people want to go back home to spend Spring Festival with their family. Many people become angry with the Ministry (部)of Railways.
They wonder why it is hopeless for them to get the tickets from the railway station(火车站)Instead, they sometimes can only buy them from ticket scalpers (票贩) at much higher price.
The Ministry of Railways estimated(估计)that about 188 million passengers would travel by train during the 40-day peak (高峰) period surrounding the 2009 Spring Festival holiday. The number of travelers will be 8% higher than that of 2008. This problem even drew the President Hu Jintao’s attention. He wrote a note to Liu Zhijun,Minister of the Ministry of Railways, asking him to take action to improve passenger convenience. Afterward, officials from the Ministry of Railways said they would try their best not to let any ticket-buyers spend Spring Festival at the railway station.
【小题1】 Many people can’t buy the tickets from the railway station, and they sometimes can only buy them from the scalpers_________.

A.expensivelyB.happilyC.dangerouslyD.hardly
【小题2】 How many people took the train trip during the peak period surrounding the 2008 Spring Festival holiday?
A.About 203 million.B.About 188 million.
C.About 180 million.D.About 174 million.
【小题3】What does the passage mainly tell us?
A.People go home much more easily during the Spring Festival.
B.It is very hard to buy tickets in the railway station during the Spring Festival.
C.President Hu Jintao cares about the railway building problem.
D.The Ministry of Railways felt sorry about the problem.


【小题1】A
【小题1】D
【小题1】B

解析

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  Yellow, orange, red and green- tree leaves make autumn a colourful time! Who paints all these colours? It is the leaves themselves. Inside a leaf, there are millions of little colourbags, they are green, yellow and orange. The green ones are called chlorophyll(叶绿素).The yellow ones are called xanthophylls(叶黄素). The orange ones are called carotene(胡萝卜素).

  In summer, the green chlorophyll is very, very busy. It makes food for the trees. It catches sunlight to change water and carbon dioxide(二氧化碳)into sugar. This sugar is the food for ther tree. It is so busy that it covers up all of the other colours in the leaf.

  When the weather grows colder in autumn, there is less light and water for trees. The trees will have a rest to get ready for winter. They've made enough food in summer! The leaves no longer need water to make food. Without the water, the green chlorophyll starts to go away. The other colours in the leaf-the yellow xanthophylls and orange carotene come out. So the leaves don't reallyturna certain colour. They just lose their green !

  But how about the red, purple and green leaves?

  The leaves look red or purple because they have some sugar in them. Theystealsome food from the tree! The green leaves are from the evergreen trees (常绿树). The evergreen trees stay green all year long. Their leaves don't lose water in winter.

  Read the passage then choose True(T) or false (F).

(1) The tree leaves have the following colourbags, such as green, yellow and orange except red.

(  )

(2) In summer, the green chlorophyll works hard for the tree leaves.

(  )

(3) In autumn, the tree leaves turn yellow or orange because the green chlorophyll stops working and goes away.

(  )

(4) Tree leaves no longer make food in summer.

(  )

(5) We can infer(推断)from the article that trees can clean the air.

(  )

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