综合测试1

综合测试题（二）第一部分：阅读理解（共两节，满分40分）第一节（共15小题，每小题2分，满分30分）阅读下列短文，从每题所给的四个选项(A、B、C、D)中，选出最佳选项。

APut an ice cube from your fridge into a glass of water. You have a piece of string(线) 10 centimeters long. The problem is to take out that piece of ice with the help of the string. But you must not touch the ice with your fingers.You may ask your friends to try to do that when you are having dinner together. There is a saltcellar on the table. You must use salt when you carry out this experiment.First you put the string across the piece of ice. Then put some salt on the ice. Salt makes ice melt(融化). The ice round the string will begin to melt. But when it melts, it will lose heat. The cold ice cube will make the salt water freeze again.After a minute or two you may raise the piece of string and with it you will raise your piece of ice!This experiment can be very useful to you. If, for example, there is ice near the door of your house, you must use very much salt to melt all the ice. If you don’t put enough salt, the water will freeze again.1. We must use _______ when we carry out this experiment.A. fridgeB. some foodC. a tableD. some salt2. How long will it take to carry out this experiment?A. More than three minutes.B. Five minutes or so.C. Only one minute or two.D. About ten minutes.3. What is the task of this experiment?A. Put the ice cube into the glass of water with the help of the string.B. Take out the ice cube in the glass of water with the help of the string.C. Take out the ice cube in the glass of water with your fingers.D. Put some salt on the ice cube and then put the string across it.4. How many things at least are used in this experiment?A. Three.B. Four.C. Six.D. Seven.BBamboo is one of the nature’s most surprising plants. Many people call this plant a tree, but it is a kind of grass.Like other kinds of grass, a bamboo plant may be cut very low to the ground, but it will grow back very quickly. A Japanese scientist recorded one bamboo plant that grew almost 1.5 meters in 24 hours! Bamboo grows almost everywhere in the world except Europe. There are more than 1,000 kinds of bamboo that grow around the world on both mountains and plains(平原).Not all bamboo looks the same. Some bamboo plants are very thin. They may only grow to be a few centimeters wide while others may grow to more than 30 centimeters across. This plant also comes in different colors, from yellow to black to green.Many Asian countries have been using bamboo for hundreds of years. They often use bamboo for building new buildings. As a matter of fact, the cables(绳索) that hold up the hanging bridge across the Min River in Sichuan are made of bamboo. The bridge has been in use for more than 1,000 years, and is still holding strong.In Africa, engineers are teaching poor farmers how to find water using bamboo. These African countries need cheap ways to find water because they have no money, and their fields often die from no rain and no water. It seems that bamboo is one of the best things they can use. Bamboo pipes and drills(钻) can help to make the poor thirsty fields to be watered.5. How is bamboo like grass?A. It is thin and easy to cut.B. It grows everywhere.C. It grows quickly after its cut short.D. It is short and green.6. The sentence “while others may grow to m ore than 30 centimeters across.” means “Some other bamboo plants may grow to be very _______.”A. shortB. strongC. thickD. tall7. From the text we know ______.A. most people call bamboo plant treesB. a bamboo plant may grow 4.5 meters in three daysC. the bamboo plant changes its colors when it growsD. a bridge held by bamboo cable was built thousands of years ago8. Why did the engineers teach the poor farmers in Africa to make use of bamboo?A. Because it is cheap.B. Because it is colorful.C. Because it drills fast.D. Because it is used by Asians.CCan trees talk? Yes—but not in words. Scientists have reasons to believe that trees do communicate with each other. Not long ago, researchers learned some surprising things. First a willow tree(柳树) attacked in the woods by caterpillars(毛毛虫) changed the chemistry of its leaves and made them taste so terrible that the caterpillars got tired of the leaves and stopped eating them. The even more astonishing, the tree sent out a special vapour — a signal causing its neighbours to change the chemistry of their own leaves and make them less tasty.Communication, of course, doesn’t need to be always in words. We can talk to each other by smiling, raising our shoulders and moving our hands. We know that birds and animals use a whole vocabulary of songs, sounds, and movements. Bees dance their signals, flying in certain patterns that tell other bees where to find nectar(花蜜) for honey. So why shouldn’t trees have ways of sending messages?9. From the passage we know that caterpillars _______.A. like willow treesB. enjoy eating fallen leavesC. can talk to other caterpillarsD. can send out a special vapour10. Caterpillars will stop eating willow tree leaves which _______.A. have a chemical change and become tastelessB. have a pleasant tasteC. are being attackedD. are communicating11. According to the passage, bees communicate with each other by _______.A. talkingB. making unusual soundsC. singing songsD. flying certain patternsDDo you know Australia? Australia is the largest island in the world. It is a little smaller than China. It is in the south of the earth. Australia is big, but its population is not large. The population of Australia is nearly as large as that of Shanghai.The government has made enough laws to fight pollution. The cities in Australia have got little air or water pollution. The sky is blue and the water is clean. You can clearly see fish swimming in the rivers. Plants grow very well.Last month we visited Perth, the biggest city in Western Australia, and went to a wild flowers’ exhibition. There we saw a large number of wild flowers we had never seen before. We had a wonderful time. Perth is famous for its beautiful wild flowers. In spring every year Perth has the wild flowers’ exhibition. After visiting Perth, we spent the day in the countryside. We sat down and had a rest near a path at the foot of a hill. It was quiet and we enjoyed ourselves. Suddenly we heard bells ringing at the top of the hill. What we saw made us pick up all our things and run back to the car as quickly as we could. There were about three hundred sheep coming towards us down the path.Australia is famous for its sheep and kangaroos(袋鼠). After a short drive from any town, you will find yourself in the middle of white sheep. Sheep, sheep, everywhere are sheep.12. Australia is _______.A. the largest country in the worldB. as large as ShanghaiC. not as large as ChinaD. the largest island in the north of the earth13. The government had made _______.A. too enough laws to fight pollutionB. so many laws that it can fight pollutionC. enough laws that it can hardly fight pollutionD. enough laws because the pollution is very serious14. Which of the following is NOT true？A. Perth is famous for its beautiful wild flowers.B. Perth is bigger than any other city in Western Australia.C. Perth lies in the west of Australia.D. No other city is larger than Perth in Australia.15. In Perth you may visit a wild flowers’ sho w in _______.A. OctoberB. JanuaryC. MayD. July 第二节（共5小题；每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。