网址:http://m.1010jiajiao.com/timu3_id_2511577[举报]
Green is an important color in nature. It is the color of grass and the leaves on trees. It is also the color of most growing plants.
Sometimes, the word green means young, fresh and growing. Sometimes, it describes something that is not yet ripe or finished. For example, a greenhorn is someone who has no experience, who is new to a situation. In the fifteenth century, a greenhorn was a young cow or ox whose horns(角) had not yet developed. A century later, a greenhorn was a soldier who had not yet had any experience in battle. By the eighteenth century, a greenhorn had the meaning it has today—a person who is new in a job.
Someone who has the ability to grow plants
well is said to have a green thumb. The expression comes from early nineteen
hundreds. A person with a green thumb seems to have a magic touch that makes
plants grow quickly and well. You might say that the woman next door has a
green thumb if her garden continues to grow long after your plants have died. ![]()
The Green Revolution is the name given some years ago to the development of new kinds of rice and other grains. The new plants produced much larger crops. The Green Revolution was the result of hard work by agricultural scientists who had green thumbs.
Green is also the color used to describe the powerful feeling, jealousy(嫉妒). The green-eyed monster is not a frightening creature from outer space. It is an expression used about four hundred years ago by British writer William Shakespeare in his play “Othello”. It describes the unpleasant feeling a person has when someone has something he wants. A young man may suffer from the green-eyed monster if his girlfriend begins going out with someone else. Or, that green-eyed monster may affect your friend if you get a pay rise and he does not.
44. A greenhorn now refers to ____. ![]()
![]()
A. a person who is new in a job B. a new solider
C. a young horse D. a cow without horns
45. A person who has a green thumb is a person ____.
A. who is good at growing plants B. whose thumbs are of green color
C. whose garden is greener than others’ D. who is younger than his neighbors
46. The author is actually talking about
____. ![]()
A. colors B. language C. politics D. agriculture
47. Which of the following statements is NOT true according to the passage?
A. In about the 16th century, a greenhorn meant an experienced soldier.
B. The Green Revolution may have some connection with green thumbs.
C. The green-eyed monster was probably created by William Shakespeare.
D. The green-eyed monster can be used to describe a person who is jealous.
查看习题详情和答案>>
What’s the secret of success? Is it having loads of money? Good luck? Great
teeth?
Sure, cash, luck, and a nice 36 can’t hurt. But many social scientists agree that what successful people have in common is this: They were 37.
There’s George Washington, the top general of America’s troops in the Revolutionary War, who lost two huge 38 and was nearly fired. 39 Steve Jobs, who developed a lot of failed products---and even got fired from Apple---before 40 to change the world with the iPod, iPhone, and iPad.
The 41 goes on: From Katy and Hall of Fame (名人堂)basketball legend Michael Jordan to Glee(欢乐合唱团 ) star Chris Colfer, the majority of today’s most successful people were 42 losers. They were dropped from record labels, 43_from basketball teams, or bullied in school. They felt humiliated, lost and 44.
But they eventually figured out how to move forward. And that is the key skill: the 45 to dust yourself off and try again. And again. Experts call this resilience(复原力 )---being able to 46 from setbacks. This is what turns losers into winners. Experts say that in terms of future success, resilience is more important than brains or talent. So 47 you fail a test or strike out at bat or sing off-key, don’t give up.
1.A. gift B. smile C. health D. habit
2.A. successes B. failures C. talented D. disabled
3.A. battles B. selections C. quarrels D. arguments
4.A. He’s B. It’s C. There’s D. They’re
5.A. doing B. leading C. applying D. returning
6.A. story B. paper C. research D. list
7.A. at a time B. at one time C. at times D. at which time
8.A. cut B. put C. thrown D. taken
9.A. promising B. happy C. hopeless D. hopeful
10.A. disability B. ability C. force D. desire
11.A. come B. resign C. recover D. keep
12.A. by the time B. next time C. before D. until
查看习题详情和答案>>
Batteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.
“To provide enough power, we need certain methods with high energy density(密度)”,said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope(放射性同位素) battery can provide power density that is much higher than chemical batteries.”
Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”
His new idea is not only in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”
Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.
1. Which of the following is true of Jae Kwon?
A. He teaches chemistry at MU.
B. He developed a chemical battery.
C. He is working on a nuclear energy source.
D. He made a breakthrough in computer engineering.
2. Jae Kwon gave examples in Paragraph 4_________.
A. to show chemical batteries are widely applied.
B. to introduce nuclear batteries can be safely used.[来源:Z.xx.k.Com]
C. to describe a nuclear-powered system.
D. to introduce various energy sources.
3. Liquid semiconductor is used to _________.
A. get rid of the radioactive waste
B. test the power of nuclear batteries.
C. decrease the size of nuclear batteries
D. reduce the damage to lattice structure.
4. According to Jae Kwon, his nuclear battery _______.
A. uses a solid semiconductor
B. will soon replace the present ones.
C. could be extremely thin
D. has passed the final test.
5. The text is most probably a ________.
A. science news report B. book review
C. newspaper ad D. science fiction story
查看习题详情和答案>>
第二节完型填空(共20小题;每小题1.5分,满分30分)
阅读下面短文,掌握其大意,然后从36—55各题所给的四个选项(A、B、C和D)中,选出最佳选项。
When I was about 12, I suddenly developed a great passion (strong feeling) for writing poetry. I gave up all my other hobbies, such as 36 stamps, and spent all my 37 time reading poetry and writing it. This habit of writing poetry on every possible time soon got me 38 trouble at school. If a lesson didn’t interest me, I 39 take out my notebook and start 40 poems in class. Of course I 41 this very cautiously, but it was not 42 I got caught. One day while I was 43 writing a poem during a geography lesson, I looked up to 44 the teacher standing over me, fuming with anger because I was not 45 attention. He tore the poem up, with a 46 not to waste time in his lesson.
47 I felt certain that I had written a good poem , 48 that evening I wrote it out again from 49.Not long after, I read 50 a poetry contest and I decided to send in my poem. Weeks later, long after I had given up 51, I got a letter informing me that I had won first 52.Everyone at school was very surprised, 53 the geography teacher, who 54 me more carefully than ever. He 55 that I not write poetry in his class!
36.A.gathering B.collecting C.keeping D.picking
37.A.spare B.important C.extra D.other
38.A.with B.to C.into D.on
39.A.might B.ought to C.should D.would
40.A.writing B.reading C.reciting D.enjoying
41.A.made B.got C.opened D.did
42.A.long ago B.long before C.soon after D.soon before
43.A.happy B.angry C.busy D.sad
44.A.find B.warn C.ask D.answer
45.A.calling B.devoting C.giving D.paying
46.A.notice B.look C.warning D.word
47.A.At the same B.All the same C.At the time D.The same as
48.A.so B.and C.as D.since
49.A.brain B.memory C.mind D.reciting
50.A.through B.courage C.hope D.wish
52.A.victory B.position C.prize D.gift
53.A.expect B.besides C.as well as D.especially
54.A.guarded B.watched C.observed D.inspected
55.A.suggested B.requested C.promised D.insisted
查看习题详情和答案>>
Pretoria, South Africa – Hundreds of swimmers play in the water along a South Africa beach. Suddenly a huge shark appears off shore and heads for the bathers. Before it can get close to the swimmers, the shark, for some mysterious reason, starts swimming parallel to the beach. Then it turns away from the shore and heads out to sea, leaving the swimmers untouched.
Such a scene will soon become common along shark-in-fasted (鲨鱼成群的) shores. An electrical engineer from the University of Pretoria has developed an electrical system that repels (击退) sharks by controlling their movements. Confused by this action, the sharks end up turning away from the beach.
In this unusual shark-repellent method, an insulated (绝缘的) cable is buried on the bottom of the sea around a beach where people swim. When an electric current is sent through the cable, an electric field is produced in the water above the cable.
When shark swims into the electric field, nerve cells just below the shark' s skin will sense the field. The electricity produces a reflex (反射作用) action in the shark' s muscles, causing the dangerous animal to swim parallel to the cable. Confused by increasing loss of control of its muscles, the shark suddenly changes its direction and heads seaward, away from the electric field.
In a test of the invisible new shark-repellent system, a cable was placed around a beach in St. Lucia, an island around the beach a long time ago to keep sharks away from swimmers, and a net was left in place during the experiment.
When the electric field was left on for more than a year and a half, no sharks were found in the net. However, when the power was turned off,89 sharks ended up in the net.
Using the electric-wall method instead of net to protect bathers would avoid the needless death of many sharks, said biologists. Currently, thousands of sharks die each year when they become trapped in protective nets that surround holiday resorts in Africa and Australia. About 10 to 15 humans are killed by sharks annually.
1.Why doesn' t the shark attack the swimmers according to the passage?
A.Because there are so many swimmers in the water.
B.Because the shark isn’t so hungry as to eat the swimmers.
C.Because of some mysterious power from the heaven.
D.Because there is an invisible electric field confusing the shark.
2.An electrical engineer from the University of Pretoria has developed __ .
A.a protective net
B.a new shark-repellent system
C.the electric field
D.an insulated cable
3.An electric field is produced in the water above the cable .
A.only when a shark swims into the electric field
B.only when an insulated cable is buried on the bottom of the sea around a beach where people swim
C.only when an electric current is sent through the cable
D.only when the sharks are trapped in protective nets
4.Which of the following is NOT TRUE according to the passage?
A.Protective nets had been fixed earlier than the new shark-repellent system.
B.The new shark – repellent system will probably replace the protective nets.
C.Thousands of sharks have died each year since this new system was put into use.
D.Using the electric-wall instead of nets would avoid the needless death of many sharks.
查看习题详情和答案>>