If you stand a short distance away from a high walland shout,your voice sometimes comes back to you as an echo.This knowledgewas made a few years before the last war,when radio waves from a transmittingstation were reflected back from a distant aeroplane.Itwas realized that if an apparatus(装置) could bedevised(设计) to send out radio waves all the time andrecord the echoes from any approaching aeroplanes,it would be a wonderfulmethod of defence in war.Scientistsset about solving the problem and radar was invented.An apparatus was made whichsent out waves in pulses ,and the presence of a distant aeroplane was on thescreen of a cathode ray(高速电子) tube,(this is what we havein a television set.) In this way radar station could detect the approach ofenemy aircraft.Afterthe war radar was put to peaceful uses.It is now installed at airports toguide aeroplane down safely in fog.It is fitted to ships so that they arewarned of obstructions(障碍物) ahead,such as icebergs Itguides ships into port.It provided aeroplane and ships with a magic eye,withwhich they can see far into the distance,in the dark or in fog.41.The last war (Line2 ,paragraph 1) may most probably refers to______.A.the World WarⅠ B.The Oct.RevolutionC.the World War Ⅱ D.the Chinese Liberation War42.Theinvention of radar______.A.has nothing to do with the reflection ofsound waves.B is exactly the same as the reflection ofsound wavesC.is on the basis of the reflection ofsound wavesD.is by changing sound waves into radiowaves43.The invention of radar is mainly for the purpose of______.A.scientific experiments B.defence in warC.peaceful uses D.finding enemy airplanes44.From the passage we may infer that radio waves can____.A.be reflected from almost everythingB.only be reflected from airplanesC.only be reflected from anything made of metalD.be reflected from anything not far away45.The word “detect” in the last sentence,the third paragraph most probablymeans______.A.hear B.smell C.feel D.discover

二、选择正确的答案。-|||-() 1.Jane doesn`t __ on Saturday and Sunday.She __ from-|||-Monday to Friday.-|||-A.work,works B.work,work C.works,works二、选择正确的答案. ( )1.Jane doesn'ton Saturday and Sunday. She___from Monday to Friday. A. work,works B. Work, work C. Works, works

The Yellow River is the second river in China.A. longB. longerC. longestD. /

The furniture in his room is quite different __________ in yoursA. from thoseB. from thatC. from that oneD. from those ones

__________ in the rain, he was wet all over.A. CaughtB. CatchingC. Having caughtD. To be caught

Many of you might love cute animals.But do you know how to look after them？Wonderful Friends may be able to tell you.It is on Hunan TV.It is about how people get along with animals. "Don't cry，my dear friends with two feet.I will protect you just as the way you protect me，"the show's theme song says.On the show，six stars learn to become animal keepers at a zoo in Guangzhou.They feed the animals and teach them to do different things like people. Many people like watching the show because it's moving.For example，to teach a chimpanzee （黑猩猩）named Coco how to climb a tree，Li Yuchun climbs first.She shows Coco step by step.Coco can't do it at first.But she practices it again and again.In the end，she can climb the tree.When she gets to the top，she hugs （拥抱）Li happily. ________They say it is dangerous for people to stay near the wild animals. "People and animals may get ill if they stay together for a long time." But the show tells us one thing：it is important for us to know more about wild animals.As English animal expert （专家）Jane Goodall said， "If we know more about the animals，we can help them.If we help them，they can be saved."（1）From the passage，we can know "Wonderful Friends" may be ____ .A.a story bookB.some starsC.a TV showD.some people（2）The underlined word "moving" means ____ in Chinese.A.感人的B.滑稽的C.轻松的D.简单的（3）Which of the following can be best put in ____ in Para.4？A.nimals are in great danger.B.Some people think differently.C.It's good to stay with animals.D.People must save the animals.（4）The passage is mainly about ____ .A.how people look after the wild animalsB.teaching wild animals is really difficultC.staying with animals for a long time is badD.knowing more about animals is important

(1)(单选题 2.0分) What's the weather like on weekends?A. It's cold.B. It's rainy.C. It's sunny.D. It's fine.

Albert Einstein had a great effect on science and history, greater than only a few other men have achieved. An American university president once commented that Einstein had created a new outlook, a new view of the universe. It may be some time before the average mind understands fully the identity of time and space and so on—but even ordinary man understands now that the universe is something larger than ever thought before. By 1914 the young Einstein had gained world fame. He accepted the offer to become a professor at the Prussian Academy of Science in Berlin. He had few duties, little teaching and unlimited opportunities for study, but soon his peace and quiet were broken by the First World War. Einstein hated violence. The misery of war affected him deeply, and he sat unhappily in his office doing little. He lost interest in his research. Only when peace came in 1948 was he able to get back to work. In the years following World War Ⅰ honors were increasingly heaped on him. He became the head of the Kaiser Whilhem Institute of Theoretical Physics. In 1921 he won the Nobel Prize, and he was honored in Germany until the rise of Nazism when he was driven from Germany because he was a Jew. 1. The main idea of Paragraph One is__________. A. the time it will take people to appreciate Einstein B. the feelings of an American college president C. the change in human thought produced by Einstein D. the difficulty of Einstein’s thought to teachers 2. According to the American university president, __________. A. everyone understands Einstein’s theory today B. Einstein achieved more than any other scientists in history C. the theory of relativity can be quickly learned by everyone D. our ideas about the universe are different today because of Einstein 3. According to Paragraph Two, Albert Einstein__________ . A. was a famous chemist B. had enough time for his study C. was popular in America D. enjoyed reading about war 4. The term “heaped on” in Paragraph Four means__________. A. offered at B. thrown at C. given to D. taken by 5. It may be concluded that __________. A. Albert Einstein had no other interests B. Einstein was forced to serve in the German army C. Germans usually have a high respect for science D. his reputation was ruined because of his work during World War Ⅰ

() 2.Have a __ rest.You will be __ soon.-|||-A.good...good B.good...well C.good...better

Basketball________ in 1891． Then in 1936 in Berlin， it became an event at the Olympics．（ ）A. playsB. is playedC. was playedD. played

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