A machine which makes water out of air could become the greatest household invention since the microwave.Using the same technology as a dehumidifier .the Water Mill is able to create a ready supply of 题目和参考答案——青夏教育精英家教网—

题目内容

A machine which makes water out of air could become the greatest household invention since the microwave.

Using the same technology as a dehumidifier (除湿器) ，the Water Mill is able to create a ready supply of drinking water by getting it from a limitless source―the air.

The company behind the machine says not only does it offer an alternative to bottled water in developed countries,but it is a solution for the millions who face a daily water shortage.

The machine works by drawing in damp air through a filter and over a cooling element which changes it into water droplets. It call produce up to 12 liters a day. The Water Mill will also produce more water when storms pass over,as the humidity (湿度) in the air increases. In keeping with its ecodevelopment,the machine uses the same amount of electricity as three light bulbs.

Inventor Jonathan Ritchey said, "The demand for water is off the chart. People ar looking for freedom from water distribution systems that are shaky and unreliable."

The machine,which is about 3 feet wide,is likely to cost £800 when it goes on sale her in the spring. Its maker,Canadian firm Element Four,estimates that a liter of water will cos around 20 pence to produce.

Environmentalists claim half the world's population will face water shortage because o climate change by 2080. One in five humans is said to lack access to safe drinking water.

The Water Mill is not effective in areas with below about 30 percent relative humidity but with average relative humidity in England of more than 70 percent that won't be much o an issue here.

( ) 5. According to the author,the biggest advantage of the machine is its .

A. little power use B. proper size

C. unlimited source D. high production

( ) 6. We can conclude from the passage that the machine .

A. can be used everywhere

B. has not been on sale

C. will replace the water distribution system

D. will solve the problem of water shortage

( ) 7. What is necessary for the machine to work?

A. Enough air. B. Enough humidity.

C. Enough water. D. Enough containers.

( ) 8. What is the best title for this passage?

A. Machine to Make Water Out of Air

B. Microwave for Household Use

C. Filter to Draw in Damp Air

D. Modern Dehumidifier on Sale

B篇内容是科学家已发明了一种机器，利用空气中所含的湿度来制造水。

5. C见文章第2段:利用空气造水，其资源是无限的。

6. B见文章第6段，D项是错的，意为"该发明将会解决水短缺问题"，显然，该发明只能create a ready supply of drinking water,且量有限(It can produce up to 12 liters a day) ,且在空气湿度相对较低的地区无效(The Water Mill is not effective in areas with below about 30 percent relative humidity) 。

7. B见文章的第3段和最后一段：该设备只有在空气湿度较高的地区才有效。

8. A考査文章的主旨大意，本文主要讲述的是一种用空气造水的机器。

练习册系列答案

相关题目

A kid went up to the attic to look for an old book. Everything was 1 ,but between the shadows,the boy could clearly see two 2 . They were about a meter apart,giving some idea of the 3 of a terrible being's head. The boy screamed,ran out,and 4 the door,leaving the monster in the attic,growling.

For the next two days the whole village was in 5 . But nobody in the village was 6 enough to go up to that attic and get rid of the monster,as the growls continued.

7 ,a fisherman passed by. Some days earlier his ship had sunk. He was a hard 8 and some villagers asked him to help them. The fisherman did not 9 to help,in return for a little money. But when he 10 the attic and heard the growls,his 11 changed―fear ap?peared on his face. He went downstairs to ask for more 12 All the villagers watched as the fisherman opened the attic door and went inside. After he had been inside for a short while the noises 13 Never again would the villagers see him or hear the sounds of the monster. Neither did anyone ever 14 to go up to the attic again.

What happened 15 that door?

Well,when the fisherman opened the door,he saw the eye of Steve,his sailor. The eye was 16 in a mirror,giving the impression of both 17 the same head. Steve's other eye had been covered by a patch for years. The fisherman laughed and thought those villagers down?stairs were so foolish. 18,the fisherman and his imprisoned friend managed to 19 and disappeared forever with the money.

And so it was,that fear alone imprisoned that whole village.

And so it happens to this very day. 20 fear drives us to foolishness,and often allows others to take advantage of us.

( ) 1. A. dark B. old C. familiar D. obvious

( ) 2. A. ears B. hands C. feet D. eyes

( ) 3. A. length B. weight C. size D. height

( ) 4. A. broke B. opened C. locked D. kicked

( ) 5. A. danger B. terror C. silence D. puzzle

( ) 6. A. calm B. stupid C. powerful D. brave

( ) 7. A. Before long B. Once again C. As usual D. After all

( ) 8. A. character B. killer C. soldier D. hunter

( ) 9. A. try B. intend C. hesitate D. agree

( ) 10. A. witnessed B. approached C. found D. entered

( ) 11. A. expression B. plan C. desire D. voice

( ) 12. A. assistance B. time C. information D. money

( ) 13. A. started B. stopped C. continued D. strengthened

( ) 14. A. prepare B. bother C. hope D. dare

( ) 15. A. to B. below C. behind D. on

( ) 16. A. trapped B. reflected C. drawn D. kept

( ) 17. A. standing for B. depending on C. belonging to D. staring at

( ) 18. A. Fortunately B. Gradually C. Actually D. Finally

( ) 19. A. escape B. survive C. explain D. hide

( ) 20. A. Unavoidable B. Senseless C. Sudden D. Natural

He held out the little red felt pillow and pointed to its tiny pocket,which held a quarter,instead of a tooth. "Look,mom!Look what the tooth fairy 1 me. Twentyfive cents!"

I 2 his excitement,and we chatted for a few minutes about the 3 to which he would put his new wealth. I returned to my kitchen 4 ,but he lingered ，silent,a thoughtful look on his face. "Mom ," he 5 ,"is there really a tooth fairy,or do you put this money in my tooth pillow and take away my tooth?"

6 I knew I would have to answer such questions,but in spite of seven years of preparation,I hadn't really thought through a 7 reply. I stalled (拖延) for time by asking, "What do you think,Simon?"

"Could be 8 ," he reasoned. "It seems like something you would do,but I know some things are 9 ,too."

"What would you like to think?" I 10,still uncertain about whether or not I was about to 11 his heart.

"It doesn't really matter," he said with 12 "I like it either way. If there is a tooth fairy,that's pretty exciting,and if it's you,that's pretty nice,too."

I concluded that no disappointment would 13 my answer,so I confessed to being his benefactor,and he 14 satisfyingly. I then cautioned him not to say 15 to his younger brother,explaining , " Each child is entitled to the magic 16 he or she is ready to ask the question that you did today. Do you understand that?"

"Yes ," he said,17 He took great pride in his older brother 18 ,and I knew he would never spoil anything 19 . I considered the matter closed,but still he lingered in the kitchen.

"Is there something else,Simon?" I asked.

"Just one 20 question,mom. Does dad know?"

( ) 1. A. gave B. left C. put D. laid

( ) 2. A. shared B. accepted C. understood D. refused

( ) 3. A. source B. amount C. purpose D. quality

( ) 4. A. games B. activities C. sports D. lessons

( ) 5. A. sighed B. considered C. confirmed D. hesitated

( ) 6. A. In surprise B. Of course C. In excitement D. To my joy

( ) 7. A. correct B. wonderful C. suitable D. quick

( ) 8. A. either B. neither C. both D. none

( ) 9. A. false B. magic C. true D. bad

( ) 10. A. said B. paused C. started D. continued

( ) 11. A. mend B. break C. kill D. capture

( ) 12. A. confidence B. excitement C. sadness D. disappointment

( ) 13. A. make for B. result from C. lead to D. get from

( ) 14. A. smiled B. responded C. wondered D. murmured

( ) 15. A. nothing B. everything C. anything D. something

( ) 16. A. before B. when C. until D. after

( ) 17. A. thinking B. nodding C. smiling D. moving

( ) 18. A. power B. height C. grade D. role

( ) 19. A. accidently B. intentionally

C. continuously D. contentedly

( ) 20. A. much B. many C. more D. most

My good friend Will recently asked for some advice dealing with what he calls" The Rush Hour"：... now between4:00 and5:00 has become the Rush Hour for me: how many proposals,quotes,emails,phone calls can you get out before most people head home? That hour never has enough minutes anymore.

For many the term" Rush Hour" refers to the mad rush to get home from work and relax,but many people deal with Will's version every day. It's the mad rush to finish everything you need to get done so that you can get into your car and battle the other rush hour.

Doesn't sound like a very productive way to work or loads of fun now,does it? For me,having anything wait until the last minute can be a major stress and I avoid it whenever possible. So,having trouble with "rush hour" yourself? I've got a few tips that might help.

A threestep approach can keep tasks from stacking (堆积) up in the last hour of the day.

1. Plan your day.

2. Do easy tasks first.

3. Don't procrastinate. Proper Planning Is Key.

Planning out your day(and your week and your month) can be a real help. If you take a few minutes early in the day to get a handle on what you need to do you can better manage your time and keep tasks from stacking up. Tackle Easy Stuff First.

Once you've done your planning,do yourself a favor and set aside some time to clear any small stuff off your plate. The things that tend to pile up at the end of days are usually smaller tasks,and there are usually quite a few of them. Knocking things out early on will help you build a productive momentum (推动力) for your whole day. The Early Bird Gets The Worm.

The best way to avoid" rush hour" is to be sure you've finished everything early. Make sure you're getting an early start on all your tasks. I'm a huge fan of the quick start; it really does work.

You don't even have to make significant progress on your tasks. Sometimes even the smallest effort at the beginning can make a ton of difference in the long run. Just remember,every little bit you can get done early is a bit you won't have to deal with during your"rush hour".

( ) 5. A good suggestion to dealing with "rush hour" is that .

A. you'd better finish all the tasks as early as you can

B. you'd better get a handle on what you need to do after the task

C. you'd better get home from work earlier than usual

D. you'd better come to the difficult jobs first

( ) 6. Which of the following words has the same meaning as the underlined word "procrastinate"?

A. Delay. B. Produce. C. Obtain. D. Hurry.

( ) 7. In which of the following situations the" Rush hour" will come to you more often?

A. When you make some arrangement before the tasks begin.

B. When you finish your jobs step by step.

C. When you manage to solve your problem before the deadline.

D. When you keep the easier thing halfdone for a long time.

( ) 8. According to the passage,what does the author probably prefer to do?

A. To leave everything undone until the last moment.

B. To battle one rush hour after another.

C. To finish his task whenever possible.

D. To have an extra work more frequently.

The little girl spoke with difficulty. She asked the clown if he brought the moon. He said he would get it,but first he wanted to know how 1 she thought the moon was. Lenore answered , " It is as big as the nail on my finger. I know this is so,because when I put my small 2 ,in front of the moon,my fingernail covers it."The clown then asked her how far away she thought the moon was. She said that it was not as high as the 3 near the window. She knew this because sometimes the moon got 4 in the top of the tree. The clown had one more question, "What do you think the moon is made of?" The princess laughed and said, "Of course,it is made of 5 .”

The clown left Lenore and went to see the king's 6 . He made a round moon of gold,a little smaller than the fingernail of the Princess. Then he put the moon on a gold 7 so that Lenore could wear it on her neck. The clown took it to Princess Lenore. She was so 8 that she quickly got well. The next day she got out of bed and played in the garden. The king was happy,but then he began to 9 . He knew the moon that night would be bright in the sky. If his daughter saw it,she would know that the moon on her neck was not 10 the moon.

Again he quickly 11 for his clown. The clown said, "I think that Princess Lenore is 12 than your officials and knows more about the moon than they do. I will ask her to explain how the moon can be on her neck and in the sky." The clown went to Lenore's room. She was in bed but not 13 . The clown asked her,"How can the moon 14 in the sky when it is hanging around your neck?" She looked at him and laughed. She said, "That's a 15 question. When I loose a tooth,a new one grows in its 16 ,doesn't it? It is the same with the moon. And I think it is the same with everything." Her voice got17 . And the clown looked at her 18 and saw that she was asleep. He covered her 19 with the blankets and walked quietly out of her room on his 20 .

( ) 1. A. nice B. bright C. big D. small

( ) 2. A. finger B. mirror C. glass D. box

( ) 3. A. building B. pole C. tree D. tower

( ) 4. A. caught B. lost C. trapped D. tied

( ) 5. A. copper B. silver C. gold D. cheese

( ) 6. A. adviser B. jeweler C. mathematician D. doctor

( ) 7. A. pin B. case C. box D. chain

( ) 8. A. energetic B. encouraged C. surprised D. happy

( ) 9. A. worry B. relieve C. doubt D. hesitate

( ) 10. A. truly B. really C. practically D. just

( ) 11. A. searched B. allowed C. applied D. called

( ) 12. A. younger B. weaker C. wiser D. stronger

( ) 13. A. sleeping B. playing C. reading D. singing

( ) 14. A. smile B. shine C. swing D. float

( ) 15. A. difficult B. confusing C. foolish D. different

( ) 16. A. place B. space C. mouth D. room

( ) 17. A. louder B. lower C. softer D. happier

( ) 18. A. happily B. strangely C. closely D. respectfully

( ) 19. A. attentively B. carelessly C. quickly D. gently

( ) 20. A. toes B. feet C. hands D. knees

The African wild dog,also called Cape hunting dog or painted dog,typically wanders around the open plains and woodlands of sub-Saharan Africa.

These longlegged canines (犬科动物) have only four toes per foot,unlike other dogs,which have five toes on their forefeet. The dog's Latin name means "painted wolf"，referring to the animal's irregular,mottled coat,which features patches of red,black,brown,white,and yellow fur. Each animal has its own unique coat pattern,and all have big,rounded ears.

African wild dogs live in groups that are usually led by a monogamous (一夫一妻的) breeding pair. The female has a litter of 2 to 20 pups (小狗) ，which are cared for by the entire pack. These dogs are very social,and packs have been known to share food and to assist weak or ill members. Social interactions are common,and the dogs communicate by touch,actions,and barks.

African wild dogs hunt in cooperative packs of 6 to 20 (or more) animals. Larger packs were more common before the dogs became endangered. Packs hunt antelopes and will also hunt much larger animals,such as wild beasts,particularly if they are ill or injured. The dogs supplement their diet with rodents (唯齿动物) and birds. As human settlements expand,the dogs have sometimes developed a taste for livestock,though significant damage is rare. Unfortunately,they are often hunted and killed by farmers who fear for their domestic animals.

African hunting dogs are endangered. They are faced with less land in their African home. They are also quite possible to be infected by diseases spread by domestic animals.

( ) 1. The underlined word " mottled" in the passage means .

A. expensive B. spotted C. beautiful D. colorful

( ) 2. We can identify an African wild dog by its .

A. actions B. barks C. coat D. toes

( ) 3. We can infer from the passage that .

A. farmers often hunt African wild dogs to make them domestic

B. only the leading pair can breed pups in a group of African wild dogs

C. the African wild dog look like the domestic dogs except their round ears

D. African wild dogs do less harm to the domestic animals than they do to them

( ) 4. A proper title for this passage might be .

A. Endangered African Dog

B. The African Wild Dog

C. Wanderers on the Plains

D. Conflicts between the Wild and Domestic

As a high school coach,I did all I could to help my boys win their games. I rooted as hard for victory as they did.

A dramatic incident,however,following a game in which I acted as a referee,changed my view on victories and defeats. I was refereeing a league championship basketball game in New Rochelle,New York,between New Rochelle and Yonkers High.

New Rochelle was coached by Dan O'Brien,Yonkers by Les Beck. The gym was crowded to capacity,and the volume of noise made it impossible to hear. The game was well played and closely contested. Yonkers was leading by one point as T glanced at the clock and discovered there were but 30 seconds left to play.

Yonkers,in possession of the ball,passed off―shot―missed. New Rochelle recovered―pushed the ball up court―shot. The ball rolled tantalizingly (令人着急地) around the edge of the basket and off. The fans screamed.

New Rochelle,the home team,recovered the ball,and tapped it in for what looked like victory. The noise was deafening (震耳欲聋的) .I glanced at the clock and saw that the game was over. I hadn't heard the final buzzer (蜂鸣器) because of the noise. I checked with the other official,but he could not help me.

Still seeking help in this confusion,I approached the timekeeper,a young man of 17 or so. He said, "Mr. Co vino,the buzzer went off as the ball rolled off the rim,before the final tapin was made."

I was in the unenviable position of having to tell Coach O'Brien the sad news. "Dan,”I said, "time ran out before the final basket was tapped in. Yonkers won the game."

His face clouded over. The young timekeeper came up. He said, "I'm sorry,Dad. The time ran out before the final basket."

Suddenly,like the sun coming out from behind a cloud,Coach O'Brien's face lit up. He said, "That's okay,Joe. You did what you had to do. I'm proud of you."

Turning to me,he said, "Al,I want you to meet my son,Joe."

The two of them then walked off the court together,the coach's arm around his son's shoulder.

( ) 5. If the buzzer went off after the final basket,the result of the game would be that

A. Yonkers won the game by one point

B. Yonkers won the game by two points

C. Yonkers and New Rochelle tied the game

D. New Rochelle won the game by one point

( ) 6. Which of the following happened first?

A. The buzz went off.

B. Yonkers was leading by one point.

C. The timekeeper spoke to me.

D. I checked with the other official.

( ) 7. What does "I was in the unenviable position" mean?

A. To be a referee is a tiring thing.

B. I had to do something awkward.

C. It was difficult to make a judgment.

D. I made a mistake during the game.

( ) 8. What seemed to be more important to Dan O'Brien is .

A. a close game B. winning a game

C. his friend Al D. his son

Farmers may not be able to prevent natural disasters,but they can at least try their best to reduce losses.

For example,they can plant crops that are more likely to survive extreme weather. In northcentral Vietnam,people with small farms do not plant rice between September and December. Seasonal rains might destroy the rice. So instead,they plant lotus seeds on raised beds. The United Nations Food and Agriculture Organization says the lotus seeds bring a good price in local markets.

Farmers in the Philippines are showing new interest in crops like winged beans,string beans,arrowroot and cassava. The Asian Disaster Preparedness Center says traditional crops like these can survive the fierce storms that often strike the islands.

The United Nations says some African farmers grow bambara groundnuts during long dry periods. The seeds of this droughtresistant plant can be boiled for eating or for making flour.

In some parts of the world,farmers grow vetiver grass. Researchers in Thailand wrote about vetiver in 2007 in the journal Science Asia. They noted that the grass can absorb and control the spread of harmful waste waters,like those from pig farms.

Agricultural expert and author William Rivera says vetiver resists difficult conditions. It reduces damage from heavy rains. And vetiver planted on earthen dams may strengthen them against breaks and flooding.

William Rivera also speaks approvingly of alfalfa. Its deep roots can find and take up groundwater. Those roots also help hold the soil against winds. And alfalfa can be a valuable food source for animals.

The deep and extensive roots of sunflowers make them another good candidate for resisting extreme conditions. The tall plants have brightly colored heads that provide seeds and oil.

North Dakota grows more hectares of sunflowers than any other American state. But North Dakota is better known as a top wheat producing state.

Hans Kandel works at the North Dakota State University Extension Service in Fargo. He says farmers in some parts of North Dakota plant wheat that is ready to harvest in only about one hundred days. That way it can grow before the hot,dry months of July through September.

( ) 1. The underlined part "bring a good price in local markets" in the 2nd paragraph implies that lotus seeds .

A. can bring the local farmers some profit

B. will satisfy the needs of the local people

C. are what the local farmers eat every day

D. don't sell very well because of their high prices

( ) 2. Vetiver grass is planted because it can .

A. be a valuable food source for animals

B. survive the fierce storms in summer

C. provide seeds and oil

D. be useful in many aspects

( ) 3. From the last paragraph we can see that the farmers in North Dakota .

A. are not hardworking so they are suffering from poverty

B. are good at taking advantage of the weather conditions

C. don't have enough knowledge of weather and farming

D. plant more sunflowers than wheat

( ) 4. From this passage we may safely conclude that .

A. weather conditions are always decisive factors in agriculture

B. some crops can help farmers to fight against disasters

C. the species of the world are changing quickly

D. agriculture is developing fast in the world

In our home it was natural to fear our father. 1 our mother was afraid of him. As children,my sister and I thought every family was like that,thinking God 2 it that way.

We were good children,even if daddy couldn't see it. Part of this was because we 3 not do anything. We were 4 especially when daddy was home.

Then came the day we found something 5 to do. We discovered we could draw pictures with 6 on our front door,and it would rub right off. We could have lots of fun,so we set to work drawing and making lots of pretty 7 all over it. We had a great time. We decided to finish our masterpiece,knowing mama would just love it and 8 us.

The praise we expected did not come. Instead of 9 the beauty in our work,all mama could see was the time and effort she would need to 10 it off. She was mad. We did not understand why,but we knew we were in big trouble！

Off we ran to find a place to 11 Soon we heard the frightened voices of mom and our neighbors calling out to us. Still we did not 12 . They were afraid we had run away or 13 in the pond nearby.

The sun set and it began to get dark. As we 14 together in the dark,we became aware of yet another voice strangely different,our daddy. In it we heard something we had 15 heard before：fear,pain and despair. Then came his prayers,our daddy with tears running down his face,16 God that he would give his life to him if he would safely return his girls.

Nothing in our lives had prepared us for this kind of shock. We 17 to him like a magnet (磁石) .We don't know yet if we actually took steps or if God somehow 18 us out and into Daddy's arms. What we do remember are those strong,loving arms hugging us like we were precious.

Things were different after that. We had a new daddy. God had 19 him with another,one who loved us.

Mama always told us that God was a God of 20. He changed our whole family with a piece of chalk.

( ) 1. A. Even B. Still C. Also D. Never

( ) 2. A. suggested B. placed C. planned D. permitted

( ) 3. A. could B. should C. would D. dare

( ) 4. A. quiet B. annoyed C. painful D. happy

( ) 5. A. absurd B. new C. exciting D. fun

( ) 6. A. pens B. chalk C. brushes D. sticks

( ) 7. A. flowers B. pictures C. girls D. animals

( ) 8. A. respect B. admire C. praise D. envy

( ) 9. A. seeing B. treasuring C. exposing D. displaying

( ) 10. A. dry B. clean C. clear D. take

( ) 11. A. stay B. escape C. lie D. hide

( ) 12. A. move B. shout C. cry D. return

( ) 13. A. swam B. played C. drowned D. wandered

( ) 14. A. hugged B. hid C. grabbed D. held

( ) 15. A. never B. ever C. always D. often

( ) 16. A. reminding B. promising C. telling D. mentioning

( ) 17. A. went B. ran C. rushed D. flew

( ) 18. A. moved B. drove C. forced D. sent

( ) 19. A. changed B. exchange C. chose D. replaced

( ) 20. A. kindness B. miracles C. strength D. love

试题分类