At last they are beginning to make money,and they hope in a few years . (pay)他们终于开始挣钱了.而且他们希望几年之内能还清债务. 题目和参考答案——青夏教育精英家教网—

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1. At last they are beginning to make money,and they hope in a few years . (pay)

他们终于开始挣钱了，而且他们希望几年之内能还清债务。

1. to pay off all their loans

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Researchers from the University of Haifa-Oranim have managed to make out the "self-irri-gating" mechanism (构造) of the desert rhubarb,which enables it to harvest 16 times the amount of water than otherwise expected for a plant in the Negev Desert. This is the first example of a selfirrigating plant worldwide.

The desert rhubarb grows in the mountains of Israel's Negev Desert,where the average rainfall is particularly low (75 mm per year) . Unlike most of the other desert plant species,which have small leaves so as to reduce water loss,this plant is unique in that its leaves are par?ticularly large.

Professor Simcha Lev-Yadun,Professor Gidi Ne'e man and Professor Gadi Katzir came across this unique plant while studying the field area,and noticed that its waxy leaves are unusually large. They observed a ridged (成脊状的) structure on each leaf.

The scientists explained that these deep and wide depressions (凹陷) in the leaves create a "channeling" mountainlike system by which the rain water is channeled toward the ground sur?rounding the plant's deep root. Other desert plants simply absorb the rain water that goes through the ground in its immediate surroundings.

The findings have shown that the natural selection process has resulted in the evolution of this plant's extremely large leaves,which improved its ability to survive in the arid climate of the desert. The results of experiments and analysis of the plant's growth―in an area with an average annual rainfall of 75 mm―showed that the desert rhubarb is able to harvest quantities of water that are 16 times the amount of water harvested by the smallleafed plants of the Negev Desert. When the research team watered the pJant artificially,they observed how the water flows along the course of the leaves' depressions to the ground surrounding the plant's single root and then goes through the ground to a depth of 10 cm or more. Under the experimental condi?tions,water goes through the ground only as deep as 1 cm. "We know of no other plant in the deserts of the world that functions in this manner," the researchers concluded.

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

A. How Plants' "Selfirrigating" Mechanism Works

B. How Plants Growing in the Desert Survive

C. A Desert Plant Growing in the Negev Desert

D. The World's First " Selfwatering" Plant Is Discovered

( ) 2. The desert rhubarb's "selfirrigating" mechanism .

A. enables it to survive with fewer leaves

B. works in many desert plants in the world

C. helps it absorb much more water than other plants

D. prevents the plant from losing water and heat

( ) 3. Which of the following helps most desert plants adapt to the dry climate?

A. Thin roots. B. Small leaves.

C. Deep depressions. D. Ridged structures.

( ) 4. What can we conclude from the passage?

A. The discovery of the desert rhubarb surprised the researchers.

B. The desert rhubarb causes Israel's Negev Desert drier.

C. The smallleafed plants aren't able to survive in the desert.

D. The research team studied the desert rhubarb in the lab.

6. Only when you will you realize you actually have the ability to change it. (acknowledge)

一旦你认识到它们是你整体的一部分，你才会意识到自己其实有能力改变它。

10. we have to undertake even though it involves risks.(that)

这是一件很重要的我们必须要做的事，尽管它是有风险的。

Since the 1970s,scientists have been searching for ways to link the brain with computers. Braincomputer interface (BCD technology could help people with disabilities send commands to machines.

Recently,two researchers,Jose Millan and Michele Tavella from the Federal Polytechnic School in Lausanne,Switzerland,demonstrated (展示) a small robotic wheelchair by a person's thoughts.

"Our brain has billions of nerve cells. They send signals through the spinal cord (脊髓) to the muscles to give us the ability to move. But spinal cord injuries or other conditions can pre?vent these weak electrical signals from reaching the muscles," Tavella says. "Our system allows disabled people to communicate with external world and also to control devices."

The researchers designed a special cap for the user. This head cover picks up the signals from the scalp (头皮) and sends them to a computer. The computer interprets the signals and commands the motorized wheelchair. The wheelchair also has two cameras that identify objects in its path. They help the computer react to commands from the brain.

Prof. Millan,the team leader,says scientists keep improving the computer software that re?ceives brain signals and turns them into simple commands. "The practical possibilities that BCI technology offers to disabled people can be grouped into two categories,communication and controlling devices. One example is this wheelchair."

He says his team set two goals. One is testing with real patients,so as to prove that this is a technology they can benefit from. And the other is to guarantee that they can use the technolo?gy over long periods of time.

( ) 5. BCI is a technology that can .

A. help to update computer systems B. link the human brain with computer

C. help the disabled to recover D. control a person's thoughts

( ) 6. How did Tavella operate the wheelchair in the laboratory?

A. By controlling his muscles. B. By talking to the machine.

C. By moving his hand. D. By using his mind.

( ) 7. Which of the following shows the path of the signals described in Paragraph 4?

A. scalp—computer—cap—wheelchair B. computer—cap—scalp—wheelchair

C. scalp—cap—computer—wheelchair D. cap—computer—scalp—wheelchair

( ) 8. The team will test with real patients to .

A. make profits from them B. prove the technology useful to them

C. make them live longer D. learn about their physical condition

( ) 9. Which of the following would be the best title for the test?

A. Switzerland,the BCI Research Center

B. New Findings about How the Brain Works

C. BCI Could Mean More Freedom for the Disabled

D. Robotic Vehicles Could Help to Cure Brain Injuries

Astronauts' meals have come a long way from the freezedried powders and semiliquid pastes of decades ago：now US scientists want to grow vegetables in minigreenhouses on the moon.

Scientists say they are looking forward to a time when residents of future lunar or even Mar?tian outposts will be able to dine on fresh vegetables. Paragon Space Development Corporation has unveiled what it called the first step toward growing flowers―and eventually food―on the moon.

Paragon,which has partnered with NASA in previous experiments on the Space Shuttle and the International Space Station,calls it a "Lunar Oasis".

This is a sealed greenhouse that looks like a bell jar encased in a 46 cm triangular aluminum frame. It is designed to safely land a laboratory plant on the lunar surface,and protect it while it grows.

The miniature greenhouse is to be launched into space by Odyssey Moon Ltd.，a participant in the Google Lunar X Prize. This competition offers $ 20 million to any entrant who can launch,land and operate a rover on the lunar surface.

Paragon officials say future testing of the " Lunar Oasis" will be driven by Odyssey's flight schedule,which will not happen until 2012 at the earliest.

When it does lift off the greenhouse will contain the seeds of Brassica,a hardy plant related to Brussels sprouts and cabbage. Because Brassica goes from seed to flower in just 14 days,it can complete its life cycle in a single lunar night.

"Colonizing the Moon or Mars seems so far away,but it is important that we do this re?search now," Paragon president Jane Poynter said.

"It takes a long time to get a lot of research,and to get integrated,reliable efficient sys?tems before colonists move in ," she said.

( ) 5. What can we know from the text?

A. American astronauts have eaten fresh vegetables on the moon:

B. Astronauts' meals have been the freezedried powers and semiliquid pastes so far.

C. The sealed greenhouse looks like a semicircle jar.

D. It won't take long before colonists move in to get a lot of research.

( ) 6. The article implies that .

A. astronauts can grow flowers in space at present

B. Paragon and NASA will carry out the test separately

C. Lunar Oasis is a series of experiments carried out in space

D. the earliest testing of the Lunar Oasis may be in 2012

( ) 7. The underlined word "colonists" in the last paragraph probably has the meaning of

A. plants B. wild beasts C. human beings D. scientists

( ) 8. The seeds of Brassica will be contained in the greenhouse mainly because .

A. their life cycle is much shorter

B. they are more nutritious than other food

C. they are related to Brussels sprouts and cabbage

D. they are very delicious

Shopping for clothes is not the same experience for a man as it is for a woman. A man goes shopping because he needs something. His purpose is settled and decided in advance. He knows what he wants,and his objective is to find it and buy it; the price is a secondary consideration. All men simply walk into a shop and ask the assistant for what they want. If the shop has it in stock,the salesman promptly produces it,and the business of trying it on follows at once. All being well,the deal can be and often is completed in less than five minutes,with hardly any chat and to everyone's satisfaction.

For a man,slight problems may begin when the shop does not have what he wants,or does not have exactly what he wants. In that case the salesman,as the name implies,tries to sell the customer something else,he offers the nearest he can to the article required. No good salesman brings out such a substitute impolitely;he does so with skill:"I know this jacket is not the style you want,sir,but would you like to try it for size? It happens to be the color you mentioned." Few men have patience with this treatment,and the usual response is：" This is the right color and may be the right size,but I should be wasting my time and yours by trying it on."

Now how does a woman go about buying clothes? In almost every respect she does so in the opposite way. Her shopping is not often based on need. She has never fully made up her mind what she wants,and she is only" having a look round". She is always open to persuasion;indeed she sets great store by what the saleswoman tells her,even by what companions tell her. She will try on any thinks suits her. Contrary to a lot of jokes,most women have an excellent sense of value when they buy clothes. They are always on the lockout for the unexpected bargain. Faced with a roomful of dresses,a woman may easily spend an hour going from one rail to another,to and from often retracing her steps,before selecting the dresses she wants to try on. It is a laborious process,but apparently an enjoyable one. Most dress shops provide chairs for the waiting husbands.

( ) 1. The passage mainly talks about .

A. how women go about buying clothes

B. women are better at shopping than men

C. differences between men and women shoppers

D. a man goes shopping because he needs something

( ) 2. The underlined sentence "the price is a secondary consideration" in the first paragraph means when a man is shopping .

A. he buys good quality things,so long as they are not too dear

B. he does not mind how much he has to pay for the right things

C. he often buy things without giving the matter proper thought

D. he buys whatever he likes without considering its value ( ) 3. ¹ What does a man do when he cannot get exactly what he wants?

A. He usually does not buy anything.

B. So long as the style is right,he buys the thing.

C. He buys a similar thing because of the color he wants.

D. At least two of his requirements must be met before he buys.

( ) 4. What is the most obvious difference between men and women shoppers?

A. Men go shopping based on need,but women never.

B. Men do not try clothes on in a shop while women do.

C. Women bargain for their clothes,but men do not.

D. The time they take over buying clothes.

3. She would go to the ends of the earth for the family.(make)

为了让她的家庭过上比较好的生活，她愿去天涯海角。

6. The president said their sacrifice ，and the cause of protecting freedom will never end. (vain)

总统说，他们的牺牲绝不会是徒劳的，而捍卫自由的事业也永远不会停止。

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