It seems to be strange to you there is a blind spot(点) on the eyes. Here is an i
题型:不详难度:来源:
It seems to be strange to you there is a blind spot(点) on the eyes. Here is an interesting experiment that can make something disappear, when one eye is open. Make a card about the size of a postcard and write two English letters L and R on it, L on the left and R on the right. First, hold the card about 80 cm away and you see both the letters. Then close your right eye and look at the letter R only with your left eye. And now, as you move the card slowly towards you, you’ll find the letter L disappearing. But if you move the card nearer to your face, the letter will be seen again. Now do the same experiment with your left eye closed, you’ll find the letter R disappearing. Why does the letter disappear? It is because there is a blind spot on the eye. When the image of the letter falls on the blind spot, it won’t be seen. That is why either of the letters disappears. 小题1:The writer of the passage thinks that _____ there is a blind spot on the eye.A.few people know | B.no one knows | C.most people know | D.all the people know | 小题2:In which order should you do the experiment? ①Hold the card ②Move the card nearer ③Close your right eye ④Write two English letters ⑤Look at the letter R ⑥Make a cardA.④⑥①②③⑤ | B.①③⑥④⑤② | C.⑥①④③②⑤ | D.⑥④①③⑤② | 小题3:The passage mainly tells us _______.A.how to find the blind spot | B.an interesting experiment | C.where the blind spot is | D.there is blind spot on the eye |
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答案
小题1:A 小题2:D 小题3:D |
解析
试题分析:这篇文章通过一个实验告诉我们,在我们的眼睛里有存在一个盲点,对于这个知识很少有人知道。 小题1:细节题。根据文章It seems to be strange to you there is a blind spot(点) on the eyes.可知,很少有人知道我们的眼睛有一个盲点。故选A 小题2:细节题。根据文章可知,我们做实验的顺序应该是:制作一个卡片,写上两个英语字母,举起卡片,闭上右眼,看字母R,移动卡片离眼睛更近。故选D 小题3:主旨题。这篇文章通过一个实验告诉我们,在我们的眼睛里有一个盲点。故选D 点评:对于此类科普类说明文,学生在答题时需要把握好答题的方法,首先对文章进行整体的阅读,初中的阅读来说不难,重在对单词词义的考察及其整个文章语言逻辑关系的判断。所以在平时的学习中除了多去积累记忆单词外,还需要适当做题,保持良好的语感与阅读的习惯。 |
举一反三
1 is becoming popular these days. Many of us run for our 2 . 3 say many of the health problems come from these 4 habits: eating too much, 5 too much, smoking cigarette, and not having enough 6 . Doctors tell us, ‘Eat less, don’t smoke, 7 exercise more.’ Running is a good exercise 8 it helps build a strong heart. It also helps most people 9 weight. 10 80-year-old woman runs three times a week. She is getting 11 . Running is good for health in other 12 , too. Many runners say running makes colds and other small health problems 13 . ‘Running is my doctor,’ says a man. Running can also make people feel 14 . So today men and women of all 15 enjoy running.
小题1: | A.Run | B.Running | C.Ran | D.To run |
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小题2: | A.health | B.doctor | C.habit | D.exercise |
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小题3: | A.Teachers | B.Doctors | C.Men | D.Women |
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小题5: | A.drink | B.to drink | C.drinking | D.drank |
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小题6: | A.exercise | B.to exercise | C.exercises | D.exercising |
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小题8: | A.so | B.because | C.because of | D.even if |
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小题11: | A.fat | B.fatter | C.slim | D.slimmer |
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小题13: | A.go away | B.went away | C.go on | D.went on |
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小题14: | A.nervous | B.relax | C.relaxed | D.tried |
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Mr. Brown is a teacher. He is from New York, America. He would like(想)to work in China because he likes our country. He thinks Chinese people are very friendly and he likes to live in China. He is happy to work in our school. He likes the school life here. He teaches English. There are 50 students in his class. Mr. Brown is kind. He and his students are good friends, too. Now some of Mr. Brown’s students play sports on the playground(操场). Bill and Mike play tennis. Tom and John play ping-pong. The other students play basketball. Mr. Brown is happy to play basketball with them. They have a good time. 阅读上面的短文,根据短文内容,选择最佳选项。 小题1:Where is Mr. Brown from?A.England. | B.China. | C.America. | D.Australia. | 小题2:What is Mr. Brown’s job(工作)in China?A.A Chinese teacher. | B.A history teacher. | C.A math teacher. | D.An English teacher. | 小题3:What does Mike do on the playground now?A.He has a class. | B.He plays basketball. | C.He plays tennis with Bill. | D.He plays games with Mr. Brown. | 小题4:What does Mr. Brown think of(认为)Chinese people?A.Friendly. | B.Beautiful. | C.Interesting. | D.Fun. | 小题5:Which one is NOT right?A.All of the students play on the playground. | B.Mr. Brown plays basketball with his students. | C.Tom plays ping-pong with John. | D.The students on the playground have a nice time. |
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As we all know, the ocean moves. But waves breaking on the beach make the ocean fun. When you stand on the shore and look at the waves, it seems like the water is moving towards you. But the water is not really moving forward. The moving you see is wave energy. And wave energy comes from the wind. Let’s think about how this works. As wave energy passes through the water, the energy makes particles (粒子) of water move up and down. Just give you an example of a wave passing under a basketball. We put a basketball on the sea. When the wind blows, a wave comes from behind the basketball. The basketball moves up to the top with the wave. Then the wave continues and leaves the basketball behind. The basketball looks lower, but it doesn’t move forward. That’s because the wave energy just moves the water which is under the basketball. So why can you see a wave knock you down on the shore?When a wave moves toward the shore, the bottom of the wave slows down because it meets the ocean floor. But the top, which is called crest(浪峰), keeps moving. The different action causes the wave to fall over or break onto the shore. If a wave is very large, it carries a lot of energy when it hits the land. As time goes by, waves can break up and carry away the rocks and other things on the shore. Shorelines are changing all the time because of wave action. 小题1:______ is really moving forward when you look at the wave.A.Water | B.The basketball | C.Water and wave energy | D.Wave energy | 小题2:Match the sentences with the pictures and the right answer. (1) The basketball moves up to the top with the wave. (2) The basketball continues and leaves the basketball behind. (3) When the wind blows, a wave comes from behind the basketball.
A.a—(2) b—(1) c—(3) | B.a—(3) b—(1) c—(2) | C.a—(1) b—(3) c—(2) | D.a—(3) b—(2) c—(1) | 小题3:Which of the following is NOT true according to the passage?A.Wave energy comes from the water. | B.Large waves carry plenty of energy. | C.Wave action makes shorelines change all the time. | D.The bottom of the wave is easy to slow down. | 小题4:The underlined word “it” ( Paragraph 3) refers to “________”.A.particles of water | B.the shore | C.the wind | D.the bottom of the wave | 小题5:The main idea of this passage is ______.A.what makes particles of water move | B.how a basketball moves on the ocean | C.how wave energy causes wave action | D.why a wave can knock you down |
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There are some easy things you can do to protect(保护) the environment and the earth. Choose ideas from the list or come up with a few of your own. ● Plant flowers, grass or trees. ●Whenever you visit a park or beach, take away what you bring there----keep rubbish in a bag until you can put it in a dustbin (垃圾箱). ●Turn off the lights, TV sets when you leave the room. This saves (节约)a lot of electricity. ●Turn off the tap (水笼头)when you brush your teeth. You can save some water by not letting it run. Also, use a glass cup instead of a paper cup because this saves paper. ●Keep the doors and windows closed in winter to keep warm air in. ●Give your old books and magazines to a library instead of throwing them away. ●Give your old clothes to poor children you know instead of throwing them away. ●Use both sides of paper. ●Stop pouring (倒)dirty water into the rivers or the lakes nearby (附近). ●Encourage all your friends to do the same things you do to help protect the earth. You don’t have to wait until Earth Day to do these things. Make every day Earth Day. If everyone makes a contribution (贡献)to protecting the environment, the world will become much more beautiful. 小题1:From the above, we know that this is ____________.A.a sign | B.a notice | C.an advertisement | D.a proposal (提议) | 小题2:The writer tells us _____________.A.to throw rubbish into a dustbin | B.to pour dirty water into the river | C.to save water by letting it run while we are brushing our teeth | D.that we can’t do all these things until Earth Day | 小题3:We can ___________to save paper.A.use a paper cup | B.use both sides of paper | C.give old books to a library | D.pick up waste paper at school | 小题4:Which of the following is WRONG according to the writer?A.Turn off the lights when you leave the room. | B.Close the doors in winter. | C.Use a paper cup when you brush your teeth. | D.Give your old clothes to the poor children. | 小题5:The main idea of this passage is how to _________.A.save money | B.save water and electricity | C.make better use of old things | D.protect the earth |
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I started learning to play pipa at the age of four. At that time,I was really 1 of pipa because the four strings always cut my fingers. The cuts were not deep 2 they were long, and they really hurt ! So my parents bought me a roll of tape to protect the 3 of my left hand.After a few days, however, I 4 the tape! When my mother found out the reason, she said 5 and bought a new roll of tape.I had only used the second roll for a few weeks 6 I lost it again! "You should try to play pipa without tape," my father said to me. But I cried and 7 another roll. My father agree and bought me another new roll.After a few months, I lost the third roll! Then the 8 , and then the fifth After this happened eight times, my mother got really 9 !"I won"t buy you any more tape," she said to me. " Now you have to play pipa without tape You must 10 it is carelessness that hurts your fingers!" 小题1:A. fond B. afraid C. proud 小题2:A. but B. and C. then 小题3:A. arms B. ears C. fingers 小题4:A. sold B. lost C. bought 小题5:A. nothing B. anything C. something 小题6:A. until B. after C. before 小题7:A. asked for B. worried about C. thought of 小题8:A. third B. fourth C. fifth 小题9:A. happy B. excited C. angry 小题10:A. expect B. forget C. remember |
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