题目内容

A Simple Scientific Experiment
Below is a description of a single scientific experiment. It shows us how iron reacts ( 反应) with air and with water.
Aim : To find out if iron rusts( 生锈) (a) in dry air ; (b) in water that has no air in it ( air- free water) ; (c) in ordinary water.
Materials : 3 clean iron nails ( 铁钉) ; test tubes ; test tube holder ; cotton wool ; oil ; Bunsen burner.
Iron in dry air
Method
(1)Put some iron nails at the bottom of a test tube.
(2)Push some cotton wool down the tube.
(3)Leave the tube for one week.
Result
After one week, the nails have not rusted.
Conclusion
Iron does not rust in dry air.
Iron in air-free water
Method
(1)Half-fill a test tube with water.
(2)Boil the water for three minutes. (This makes sure there is no air in the water.
(3)Put two or three clean nails in the water.
(4)Add some oil to the water. (This will keep air out of the water.)
(5) Leave the tube for one week.
Result
The nails do not rust in the tube with air-free water.
Conclusion
Iron does not rust in air- free water.
Iron in ordinary water
Method
(1)Half –fill a test tube with water and add two or three clean nails.
(2)Leave the tube for one week.
Result
The nails rust in the tube with ordinary water.
Conclusion
Iron rusts in ordinary water. (238 words)
小题1:In the first part of the experiment the cotton wool is most probably used to ______________.
A.keep the air dryB.keep the tube wet
C.make the nails rustD.keep the tube clean
小题2:What are necessary steps to make sure the water in the tube is air free?
①Leave half a tube of water in it              
②Boil the water for some time
③Put some clean iron nails in the tube           
④Add some oil to the water
A.①②B.①③C.②③D.②④
小题3:We can conclude from the experiment that only ____________ makes iron rusty.
A.dry airB.cotton woolC.ordinary waterD.air-free water

小题1:A
小题2:D
小题3:C
短文属于说明文。这是一个关于铁和水、空气的反应的科学实验。
小题1:细节理解题。这个实验的目的就是提供干燥空气,因此可推测棉花羊毛的作用是吸湿,保持空气干燥。
小题2:细节理解题。从Iron in air-free water这个实验的方法中可知,第二步和第四步就是为了使水中不含有空气。
小题3:细节理解题。通读三个实验可排除A、B、D三项,通过Iron in ordinary water这个实验的结论可知“Iron rusts in ordinary water.”这也是三个实验中唯一使铁生锈的条件。
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For thousands of years, people have used plants to make medicines. They used different parts of the plants —the roots, the leaves, the flowers, and the bark (树皮). Today, doctors have rediscovered more medicinal (药用) values of some plants. Let’s look at some examples.
Foxglove is a common plant. People have used it to make the heart slow down. Recently scientists have developed another drug from it. This new drug helps prevent other heart problems.
In some areas, malaria has been a problem. Scientists have learned that the bark of a South American tree, the cinchona, can be made into a drug to prevent malaria. For a long time, the Chinese have known that a special plant, wormwood, can also fight malaria. Scientists have been working with it to develop new drugs against malaria.
In Germany, some scientists studied garlic (大蒜) for four years. They found that it helps prevent the build-up of plaque (血小板) because too much plaque is bad for health. This very common plant continues to be studied.
As we know, there are about 250,000 kinds of flowering plants in the world. Scientists have only studied little more than one percent of plants for their medicinal value. Maybe medicines for AIDS and cancer will be made from the other 99 percent.
小题1:What can foxglove be used for?
A.Studying plants.
B.Building up the plaque.
C.Treating AIDS and cancer.
D.Preventing heart problems.
小题2:What does the underlined word “malaria” in Paragraph 3 refer to (指的是)?
A.A drug.B.A plant.
C.An illness.D.An animal.
小题3:How many plants are mentioned in the passage?
A.3.B.4.C.5.D.6
小题4:Which of the following is the best title for the passage?
A.Past and future
B.Plants and medicine
C.Health and illness
D.Scientists and doctors
Have you ever been in a meeting while someone was making a speech and realized suddenly that your mind was a million miles away? You probably felt sorry and decided to pay attention and never have daydreaming again. Most of us have been told from earliest school days that daydreaming is a waste of time.
L. Giambra, a psychologist(心理学家), says,” On the contrary , daydreaming is quite necessary. Without it, the mind couldn’t do all the thinking that it has to do during a normal day. You can’t possibly do all your thinking with a conscious (神志清醒的)mind. Instead, your unconscious mind is working out problems all the time. Daydreaming may be one way that the unconscious and conscious states (状态)of mind have silent conversations .”
Early psychologists paid no attention to the importance of daydreams or even thought they were harmful. At one time people thought that some psychological illness caused day dreaming. They did not have a better understanding of daydreams until the late 1980s. Eric Klinges, a professor, is the writer of the book Daydreaming. Klinges says, “We know now that daydreaming is one of the main ways that we organize our lives, learn from our experiences, and plan for our futures. Daydreams really are a window on the things that we fear and the things we long for (渴望) in life.”
Daydreams are usually very simple and direct(直接), quite unlike sleep dreams. Sleep dreams may be hard to understand. It’s easier to get a deep understanding of your life by paying close attention to your daydreams than by trying to examine (分析)your sleep dreams carefully. Daydreams help you know the difficult situations(情况)in your life and found out a possible way of dealing with them.
Daydreams cannot be predicted(预言): they move off in unexpected directions which may be creative and full of useful ideas. For many famous artists and scientists, daydreams were and are a main source of creative energy.
小题1:The passage is mainly about _______ .
A.winter sleepsB.sleep dreamsC.daydreamingD.predictions
小题2:The underlined phrase On the contrary  means _________ .
A.总之B.相反C.毕竟D.因此
小题3:The writer of this passage thinks daydreams are__________.
A.hard to understandB.important and helpful
C.harmful and unimportantD.the same as sleep dreams
小题4:Psychologists now believe that ________.
A.daydreams are usually very simple and can be predicted
B.daydreams are usually difficult to understand
C.daydreams cause some psychological illness
D.daydreams may be creative and full of useful ideas
小题5:The writer quoted  (引用 )L. Giambra  and Eric Klinges  to ________.
A.list out two different ideas
B.point out the wrong ideas of early experts
C.support his own ideas
D.report the latest research on daydreams
For most people, the word "fashion (时尚)" means "clothes". But people may ask the question, "What clothes are in fashion?" And they use the word "fashionable" in the same way:
"She was wearing a fashionable coat. His shirt was really a fashionable colour. "
But of course there are fashions in many things, not only in clothes. There are fashions in holidays, in restaurants, in films and books. There are even fashions in school subjects, jobs ... and in languages.
Fashions change as time goes. If you look at pictures of people or things from the past, you will see that fashions have always changed. An English house of 1750 was different from one of 1650. A fashionable man in 1780 looked very different from his grandson in 1860.
Today fashions change very quickly. Some of this is natural. We hear about things much more quickly than in the past. Newspapers, radios, telephones and television send information from one country to another in a few hours.
New fashions mean that people will buy new things, so you see there is money in fashion.
小题1:Most people think that "fashion" means __________.
A.subjectsB.holidaysC.booksD.clothes
小题2:By          we can see that fashions change as time goes.
A.finding a job
B.looking at pictures
C.eating in a restaurant
D.wearing a fashionable coat
小题3:In the 5th paragraph the writer mentions            kinds of ways to send information.
A.threeB.fourC.fiveD.six
小题4:"There is money in fashion" means
A.people like fashion and money
B.fashionable things are expensive
C.one can make money through fashion
D.a fashionable man makes much money
小题5:The passage is mainly about              .
A.the changes of fashions
B.the kinds of colours
C.the money in fashion
D.the differences between houses
Every year landslides cause 25 to 50 deaths and $2 billion in damage in the United States. And in December, a single event killed more than 2000 people in the Philippines. Sending workers to stabilize mountainsides using steel bars can help a lot, but it introduces new difficulties because of dust and loosen heavy, dangerous debris from the work. “It’s a quite dangerous job,” says Giorgio Pezzuto of D’ Appolonia, working with eight other companies. Now there may be an answer: a three-ton robot called Roboclimber.
“The idea is to operate a machine far away that can do the stabilizing job without a human being near,”says Pezzuto, manager for the project, which is supported by a European organization. Engineers say that the machine will be faster and cheaper than manual labor. The robot, a large radio-controlled four-legged spider, has cost at least $2 million so far. It should be able to climb mountainsides, drill holes and insert steel bars there. Testing should begin in May.
小题1:The underlined word “event” refers to_____
A.earthquakeB.debrisC.dustD.landslide
小题2:The purpose in writing this text is _____
A.to tell people how serious the damage caused by landslides is
B.to tell people that sending workers to stabilize mountainsides is a dangerous job
C.to show people how to use a new robot
D.to introduce a new robot that can be used to stabilize mountainsides
小题3:What does the robot look like?
A.human beingB.spiderC.steel barD.a drill
小题4:A landslides cause _____________in damage in the United States Every year .
A.25 to 50 deathsB.more than 2000 people died
C.$2 billionD.both A and C
小题5:The biggest advantage of this product is that____
A.it will be faster and cheaper than manual labor
B.it can climb mountainsides, drill holes and insert steel bars there.
C.it can do the stabilizing job without human beings near
D.it is like a spider
根据短文内容,从每小题A、B、C三个选项中选出一个最佳答案。
There are many unusual hotels around the world. In Greenland, there is a hotel made out of ice, open between April and December every year. In Turkey, there is a cave hotel with a television, furniture, and a bathroom in each room. And in Bolivia, there is the Salt Palace Hotel.
Thousands of years ago, the area around the Salt Palace Hotel was a large lake. But over time, all the water disappeared. Today, the area has only two small lakes and two salt deserts.
The larger of the two deserts, the Uyuni salt desert, is 12,000 square kilometers. During the day, the desert is bright white because of the salt. There are no roads across the Uyuni desert, so local people must show guests the way to the hotel.
In the early 1990s, a man named Juan Quesada built the hotel. He cut big blocks (块) of salt from the desert and used the blocks to build it. Everything in the hotel is made out of salt: the walls, the roof, the tables, the chairs, the beds, and the hotel’s bar.
The sun heats the walls and roof during the day. At night the desert is very cold, but the rooms stay warm. The hotel has 12 rooms. A single room costs$40 a night, and a double room costs$60.
A sign on the hotel’s wall tells guests, “ Please don’t lick the walls-it doesn’t taste good!”
小题1:People can go to __________ to visit the ice hotel in April.
A. Greenland             B. Turkey               C. Bolivia
小题2:The Salt Palace Hotel is unusual because __________.
A. it has a long history        
B. it’s made out of salt      
C. the rooms stay cold all day
小题3:Where did the salt used for the hotel come from?
A. A salt factory.           B. The desert.              C. The lakes.
小题4:The underlined word “lick” means __________ in Chinese.
A. 摸                        B. 踢                   C. 舔
小题5:The best title for the passage is _________.
A. Unusual Hotels           B. Salt Desert              C. A Story of Juan Quesad

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