题目内容
（请给出正确答案）
work has been done to improve the living standard．
A.Many
B.A great many
C.A large number of
D.A great deal of
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更多“work has been done to improve …”相关的问题
______ work has been done to improve people's living standard.
A．Many
B．A great many
C．A large number of
D．A great deal of
Three quarters of the teachers say the Internet and search tools have had a great effect on theirstudents&39;research habits and skills. But 87 percent agree that this young generation don&39; t knowabout hard work and can&39;t stay attentive(注意力集中的) for long. And 64 percent say the Internetdoes more to distract (使分心)students than to help them in their studies. Many students think "doingresearch"just means doing a quick search on Google.
According to the teachers, one problem is that students trust too much of the information on theInternet. These students have not developed skills to judge the quality of the information. It&39; s some-thing that really has to be taught and paid attention to. It&39; s like everything else. In a world wherethings can happen quickly, you really need to have a way to step back, think and make judgmentabout the information you have. And teachers can do a lot to teach that.
Another problem is that being able to quickly find information keeps the students from workinghard. They become dependent on search tools and do not make enough use of printed books. Manyteachers are also afraid that the Internet makes it easy for students to copy work done by others.
36. What does the text mainly discuss about the Internet？
A.Its success in high school teaching.
B.Its influence on school teachers.
C.Its achievements in school research.
D.Its effect on high school students.
What is the percentage of the teachers who think the students need hard work？A.75%.
B.64%.
C.87%.
D.70%.
What should be taught to students according to Paragraph 3 ？A.Ways to improve their research habits.
B.How to do research on the Internet.
C.Skills to judge the quality of information.
D.How to pay attention to their studies.
What will happen when students depend too much on search tools？A.Their studies will be greatly improved.
B.They won’ t make good use of books.
C.Their attention to things will last longer.
D.They won’ t copy work done by others.
Today all that has changed. On many modern farms machines now supply 96 percent of the power, human labor 3 percent, and horses 1 percent. Modern farms are enterprising businesses which keep only the livestock that can pay its way. The children go to school by bus every morning, the parents work on the farm or in the house, and hired help is seldom needed. Their work has been replaced by a whole army of farm machines.
Farmers in the machine age also use the new fertilizers, new sprays, new feeds, new hybrid seeds, and other helps developed by farm sciences. As a result the farmers are able to produce more food with less labour. This means fewer but larger farms and fewer but more prosperous farmers.
In old days, most of the work on a farm was done by______.
A．all the farm family
B．livestock
C．farm machines
D．both A and B
For anyone who hates doing yard work, your new best friend may have arrived. A robot can autonomously shovel snow, collect leaves and cut grass.
“We’re trying t o help people not spend time on yard work，”said Steven Waelbers, the designer of t he robot. “We want people to enjoy t heir free time with their family.”The electric robot can run by itself in right directions with the help of two beacons(信号塔) that must be placed in the yard. the robot includes a camera and ultrasound sensor (超声传感器) that Waelbers said would stop quickly when it finds pets and people.
Owners of the robot will need t o regulate t he values stored in the robot. then it will confirm the task it’s going to take. Before the robot operate by itself, an owner must manually wheel it around the yard 一 taking it around any obstacles like trees, bushes or mailboxes. By doing this, the robot is taught how long and wide the lawn is, and won’t accidentally(不小心) destroy your rose hush or run to the neighborhood.
Once this setup is complete, and the $3,999 robot has been trained on where to cut grass, rake leaves and shovel snow, it operates without any supervision.
Waelbers has always loved to build robots and play with electronics. He started work on a high-tech company after his father asked him to make a robot that would shovel snow for him. Waelbers plans to start sales in early 2017.
26. This article mainly talks about()
A. a newly-designed robot
B. The founder of a company
C. problems with a new product
27. According to Steven Waelbers, the robot is designed to()
A. encourage people to do exercise
B. help people keep healthy and fit
C. make people enjoy family time
28.the robot would stop in front of pets and people thanks to()
A. the remote controller
B. the ultrasound sensor
C. the big and square yard
29. Which of the following steps should be done in the first place？()
A. An owner must wheel the robot around the yard by himself.
B. The robot learns and stores the length and width of the lawn.
C. The robot operates the task it’s going to take without supervision.
30. Which of the following about Waelbers is TRUE？()
A. He didn’t love building robots when he was a young boy.
B. His father asked him to make a robot that could play balls.
C. He is starting to sell this snow-shoveling robot in early 2017.
M: I first became interested in doing things myself several years ago. I've been doing something on it every now and then for almost a year now. You know, I couldn't afford to pay workmen to do it.
Q: What do we learn about Mr. Miller？
(19)
A．He used to be a workman himself.
B．He likes to do repairs and make things himself.
C．He is professional builder.
D．He paid workmen to decorate the house.
第二节 完型填空
阅读下面短文，从短文后所给各题的四个选项(A、B、C和D)中选出能填入相应空白处的最佳选项。
During the 9th century scientists found that when certain parts of the brain of a man were 【B1】 ,he would lose the 【B2】 to do certain things. And so, people thought that each part of the brain does a different 【B3】 . But modern research has 【B4】 out that this is not so, for it is not 【B5】 to say 【B6】 what each part of the brain does.
In the past fifty years there 【B7】 a great increase in the amount of research 【B8】 on the brain. Chemists and biologists have 【B9】 that the 【B10】 the brain works it is not so 【B11】 as people in general may think. Chemists tell us that 100,000 chemical changes 【B12】 in the brain every second. Some recent researches also 【B13】 that we can remember every thing 【B14】 happens 【B15】 us. We 【B16】 not be able to recall(回忆)the things we've heard and seen, but it is all kept there in the storehouse of the human mind.
Earlier scientists thought the power of one's brain got weaker as one grow 【B17】 . But it is now thought that is not 【B18】 . As long as the brain is 【B19】 【B20】 exercise it keeps its ability. It has been proved that an old person who has always been active in the mind has a quicker mind than a young person who has only done physical work without using much of his brain. It is now thought that the more work we give our brains, the more work they are able to do.
【B1】
A．destroyed
B．injured
C．broken
D．wounded
(41~45) Researchers have found that drugs used to treat human seizures can delay aging in worms by as much as 50 percent. The roundworms used for the study are similar to humans in their molecular makeup, raising the
possibility that the drugs could also extend the life span of humans。
第41题：“By finding a class of drugs that delays aging we have found a relationship between the function of the nervous system and aging that was not well understood, ” said Kerry Komfeld, a geneticist at the Washington University School of Medicine in St. Louis, Missouri. The findings are detailed this week in the journal Science。 The discovery came out of the thesis work by one of Komfeld’s graduate students, Kimberley Evason. About four years ago, Evason began exposing groups of the roundworm Caenorhabditis elegans to commercially available drugs to see if the drugs would delay aging or promote longevity。
A. But Komfeld said scientists will not know about the applicability of the drugs in humans until a similar study is done on humans. “What’s very encouraging is that these drugs were developed to treat humans, and they are well understood, because they’ve been used for a long time, ” he said。
B. Later the scientists discovered that two related anticonvulsant drugs also lengthened the lives of the worms-in the case of one drug, by almost 50 percent. “This was a big surprise to use, Komfeld said. ”“We didn’t think anticonvulsant drugs had any particular relationship to aging. That connection was completely unexpected. ”
C. Roundworms are a poor subject for experiments, because they are not like humans, even though their molecules are similar. For example, they have no bones, nor do they show emotions, making it difficult to know how exactly human subjects would react to these drugs in large quantities. However, using the worms allows experiments to be conducted quickly, because they do not live for long。
D. “Somehow the neural activity seems to regulate the aging of all of the body the skin, musculature, and reproductive tract, ” Kornfeld said. “Somehow the nervous system coordinates the progress of all these tissues, evidently, though the life stages. But we don’t know how it does that. ”
E. The discovery may also shed light on the little-understood aging process. Since the drugs act on the neuromuscular systems of both humans and worms, the findings hint at a link between neural activity and aging。
F. Unlike vertebrates, the worms are ideal subjects for the study of aging because of their short life spans, which last only a couple of weeks in a laboratory. The worm is well known in genetics, and the worm’s genome has been sequenced。
G. Use of this drug has been permitted by law since 1998 and wider use is now expected as a result of the studies. “We can clearly link this drug with human aging, but we still need to find proof, says Kornfeld optimistically. ”
I am sure Tom has been here and has done ______.
A．that required him
B．which was required of him
C．what was required of him
D．what has been required him
______ has been done to prevent the water in the lake from being polluted.
A．Little
B．Few
C．Other
D．Many
