相关习题
 0  21854  21862  21868  21872  21878  21880  21884  21890  21892  21898  21904  21908  21910  21914  21920  21922  21928  21932  21934  21938  21940  21944  21946  21948  21949  21950  21952  21953  21954  21956  21958  21962  21964  21968  21970  21974  21980  21982  21988  21992  21994  21998  22004  22010  22012  22018  22022  22024  22030  22034  22040  22048  151629 

科目: 来源: 题型:阅读理解

第四节: 阅读理解(共20小题,每小题2分,满分40分)

       阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

Science Daily -------- Dutch ecologist Roxina Soler and her colleagues have discovered that subterranean(地下的)and above ground herbivorous(食草的)insects can communicate with each other by using plants as telephones. Subterranean insects issue chemical warning signals through the leaves of the plant. Thus, aboveground insects are warned that the plant is already “ occupied”.

              Aboveground, leaf-eating insects prefer plants that have not yet been occupied by subterranean root-eating insects. Subterranean insects send out chemical signals through the leaves of the plant, which warn the aboveground insects about their presence. This message makes it possible for two different kinds of insects to avoid each other, so that they do not compete for the same plant.

       In recent years it has been discovered that different types of aboveground insects develop slowly if they feed on plants that also have subterranean residents and vice versa(反之亦然). It seems that a system has developed through natural selection, which helps the subterranean and aboveground insects to communicate with each other. This avoids unnecessary competition.

       Through the “green telephone lines”, subterranean insects can also communicate with a third party, namely the natural enemy of caterpillars(毛虫). Parasitic wasps(寄生的黄蜂)lay their eggs inside aboveground insects. The wasps also benefit from the signals sent by the leaves, as these help them find more insects for their eggs. The communication between subterranean and aboveground insects has only been studied in a few systems. It is still not clear how widespread this phenomenon is.

       This research was carried out at the Netherlands Institute for Ecology by Roxina Soler, Jeffrey Harvey, Martijn Bezemer, Wim van der Putten and Louise Vet. The phD project, in which this study was carried out, was funded by the Free Competition of NOW Earth and Life Sciences.

41. After finding a plant occupied by root-eating insects, aboveground insects will usually ________.

       A. send out warning signals

       B. choose to leave the plant

       C. fight with the root-eating insects

       D. compete with them for the same plant

42. Aboveground insects will develop more quickly if their food plants _______.

       A. have more green leaves

       B. get more water and sunlight

       C. are often visited by parasitic wasps

       D. are not occupied by root-eating insects

43. The underlined part “a third party” in Paragraph 4 refers to ______.

       A. caterpillars               B. root-eating insects    

       C. parasitic wasps          D. aboveground insects

44. What is the best title for the passage ?

       A. Insects use plants as “telephones”

       B. How do animals avoid competition

       C. The living habit of different insects

       D. Communication between different insects

查看答案和解析>>

科目: 来源: 题型:

第Ⅱ卷

第四部分:写作(共三节,满分55分)

第一节:单词拼写

66.He knew there was a speed limit but he just______(不理睬)it and drove very fast.

67.He has all the_______(品质)of a successful leader..

68.There are certainly ______(文化) differences between the two communities.

69.The whole nation was making rapid progress, with all its people ______( 团结) around the leader.

70.We all______(衷心地) hope you will be well again.

71.You shouldn't go swimming until your food has a chance to ______(消化).

72.He looked at us in_______(惊讶地) .

73.It was too hot; while walking on, the women wiped the sweat off faces

with _________(手帕).

74.What are you _______(耳语) about ?  

75 Our teacher has ________ (提前) the deadline for handing in homework

by one week.

查看答案和解析>>

科目: 来源: 题型:

If you can make what the teachers teach ______, you will make rapid progress.

       A. yours                B. yourself            C. you                      D. your

查看答案和解析>>

科目: 来源: 题型:

The heavy smoker has decided to _____ smoking, for he knows smoking _____ his health.

     A. cut down, is harmful to                      B. cut up, does harm to 

C. cut off, is harmful for                       D. cut down, does harm for

查看答案和解析>>

科目: 来源: 题型:阅读理解

Joanne was stuck in a traffic jam in central Birmingham at 5:30 and at 6:30 she was expected to be chairing a meeting of the tennis club.At last,the traffic was moving.She swung quickly racing to her house. As she opened the door,she nearly tripped over Sheba.

“Hey,Sheba,” she said,“I’ve got no time for you now,but I’ll take you out as soon as I get

back from tennis club.” Then she noticed Sheba seemed to be coughing or choking. Obviously,she could hardly breathe.Immediately, Joanne realized she would have to take her to the vet(兽医)

When she got there,the vet was just about to close for the day. Seeing the state of Sheba,Dr. Sterne brought her quickly into his office.

“Listen,doctor,I’m really in a rush to get to a meeting. Can I leave her with you,and go and get changed? I’ll be back in ten minutes to pick her up,and then I’ll take her on to the meeting with me. Is that OK?”

“Sure.” said the doctor.

Joanne made the quick trip back to her house in a couple of minutes.As she was once more

 entering the hall,the phone by the door began to ring.

“This is Dr. Sterne,” said an anxious voice. “I want you to get out of that house immediately,” said the doctor’s voice.“I’m coming round right away,and the police will be there any time now.Wait outside!”

At that moment,a police car screeched to a stop outside the house.Two policemen got out and ran into the house.Joanne was by now completely confused and very frightened.Then the doctor arrived.

“Where’s Sheba? Is she OK?” shouted Joanne.

“She’s fine,Joanne.I took out the thing which was choking her, and she’s OK now.”

Just then, the two policemen reappeared from the house, half-carrying a white-faced man,who could hardly walk. There was blood all over him.

“My God,” said Joanne,“how did he get in there? And how did you know he was there?”

“I think he must be a burglar.” said the doctor. “I knew he was there because when I finally removed what was stuck in Sheba’s throat:it turned out to be three human fingers.”

Joanne wanted to get back to her home again           

A.to dress up for the meeting    B.to phone the police station

C.to catch the badly hurt burglar       D.to wait for her dog to be cured  

From the passage we can infer that         

A.Sheba fought against the burglar

B.the police found the burglar had broken in

C.Joanne had planned to take her dog to the meeting at first

D.the doctor performed a difficult operation on the dog

The underlined word a burglar in the last paragraph probably means ____________.

A. a cleaner         B. a physician        C. a thief           D. a murderer

In this passage, the writer intends to tell us that the dog is           

A.clever   B.friendly        C.frightening      D.devoted

查看答案和解析>>

科目: 来源: 题型:阅读理解

  Many children first learn the value of money by receiving an allowance. The purpose is to let children learn from experience at an age when financial mistakes are not very costly.

The amount of money that parents give to their children to spend as they wish differs from family to family. Timing is another consideration. Some children get a weekly allowance. Others get a monthly allowance.

In any case, parents should make clear what, if anything, the child is expected to pay for with the money. At first, young children may spend all of their allowance soon after they receive it. If they do this, they will learn the hard way that spending must be done within a budget. Parents are usually advised not to offer more money until the next allowance.

The object is to show young people that a budget demands choices between spending and saving. Older children may be responsible enough to save money for larger costs, like clothing or electronics. Many people who have written on the subject of allowances say it is not a good idea to pay your child for work around the home. These jobs are a normal part of family life.

Paying children to do extra work around the house, however, can be useful. It can even provide an understanding of how a business works.

Allowances give children a chance to experience the three things they can do with money. They can share it in the form of gifts or giving to a good cause. They can spend it by buying things they want. Or they can save it.

Saving helps children understand that costly goals require sacrifice: you have to cut costs and plan for the future. Requiring children to save part of their allowance can also open the door to future saving and investing. Many banks offer services to help children and teenagers learn about personal finance. A savings account is an excellent way to learn about the power of compound interest.

Compounding works by paying interest on interest. So, for example, one dollar invested at two percent interest for two years will earn two cents in the first year. The second year, the money will earn two percent of one dollar and two cents, and so on. That may not seem like a lot. But over time it adds up.

77.For children who receive allowances, they’d better not ________.  

 A. waste money to buy gifts for their parents or friends  

 B. buy their favorite clothing or electronics for themselves  

 C. save money like their parents or other adults  

 D. ask for the next allowance before the decided date.

78.Many parents give children an allowance regularly to ______.  

 A. meet children’s basic need for life       

B. give control over their children  

 C. see whether they have financial mistakes  

D. help children learn how to manage money

79.If children are required to save their allowance, they ______.  

 A. can experience three things related to money  

 B. can understand the relation between goals and sacrifice  

 C. will do more work around the house  

 D. help themselves found the basis for their future life

80. What is the best title for the passage?

A. Be Generous to Pay Your Children

B. Be Wise to Avoid Financial Mistakes

C. Saving Allowances Does Good to Children

D. Allowances Help Children Learn about Money

查看答案和解析>>

科目: 来源: 题型:

. We should take part in such activities in future _____ we did yesterday.

A. which       B. as         C. that          D. than    

查看答案和解析>>

科目: 来源: 题型:

The parrot, the bird which can be taught to talk, can create a (n) _____ atmosphere anywhere.

a. living                       b. natural               c. artificial                    d. lively

查看答案和解析>>

科目: 来源: 题型:

Look at the trouble I am in! If only I     your advice.

A、followed         B、would follow      C、had followed       D、should follow

查看答案和解析>>

科目: 来源: 题型:阅读理解

Some say everyday miracles(奇迹) are predestined(注定的)----the right time for the appointed

meeting. And it can happen anywhere.

In 2001, 11-year-old Kevin Stephan was a bat boy for his younger brother's Little League team in

Lancaster, New York. It was an early evening in late July. Kevin was standing on the grass away from the plate, where another youngster was warming up for the next game. Swinging his bat back and forth, giving it all the power an elementary school kid could give. The boy brought the bat back hard and hit Kevin in the chest. His heart stopped.

When Kevin fell to the ground, the mother of one of the players rushed out of the stands to his aid.

Penny Brown hadn't planned to be there that day, but at the last minute, her shift(换班)at the hospital had been changed to see her son’s performance. She was given the night off. Penny bent over the senseless boy, his face already starting to turn blue, and giving CPR, breathing into his mouth and giving chest compressions. And he revived in the end.

After his recovery, he became a volunteer junior firefighter, learning some of the emergency first-aid

techniques that had saved his life. He studied hard in school and was saving money for college by working as a dishwasher in a local restaurant in his spare time.

Kevin, now 18, was working in the kitchen when he heard people screaming, customers in confusion,

employees rushing toward a table. He hurried into the main room and saw a woman there, her face turning blue, her hands at her throat. She was choking.

Quickly Kevin stepped behind her, wrapped his arms around her and clasped his hands. Then, using

skills he'd first learned in Scouts. The food that was trapped in the woman's throat was freed. The color began to return to her face.

"The food was stuck. I couldn't breathe," she said. She thought she was dying. "I was very frightened."

Who was the woman?

Penny Brown.

(    )59. The author wrote the passage to show us that_______.

A. miracles are predestined and they can happen anywhere

B. whoever helps you in trouble will get a reward one day

C. God will help those who give others a helping hand

D. miracles won’t come without any difficulty sometimes

(    )60 Which of the following statements is True of Kevin Stephan?

A. He was hit on the face by a boy and almost lost his life

B. He was a volunteer junior firefighter, teaching the players first-aid skills

C. He worked part-time in a local restaurant to save money for college

D. He saved Penny Brown though he didn’t really know how to deal with food choke

(    )61. Why did Penny Brown change her shift and was given the night off that night?

A. She was invited to give the players directions

B. She volunteered to give medical services

C. She was a little worried about his son’s safety

D. She came to watch her son’s game and cheered him

(    )62. The underlined word “revived”(paragraph3) most likely means______.

A. came back to life      B. became worse     C. failed      D. moved

(    )63. When Kevin knew the woman was Penny Brown, probably he first felt _____.

A. happy        B. surprised         C. sad       D. worried

查看答案和解析>>

同步练习册答案