题目内容

Science Daily (Apr 27, 2008) — Dutch ecologist Roxina Soler and her colleagues have discovered that subterranean (地下的) and aboveground 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. This way, 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 messaging makes it possible for spatially-separated 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 notice 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 cases. It is still not clear how widespread this phenomenon is. But scientists are looking into it. This research was carried out at the Netherlands Institute for Ecology (NIOO-KNAW) 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 NWO Earth and Life Sciences.

51. After finding a plant occupied by subterranean insects, aboveground insects usually ____.

A. send out warning signals             B. choose to give up the plant

C. compete for the plant                D. share it with the subterranean insects

52. Aboveground insects will develop more quickly if they ____.

A. feed on plants occupied by subterranean insects

B. feed on plants not occupied by subterranean insects

C. become cleverer through natural selection

D. compete with subterranean insects

53. Subterranean insects communicate with a third party through ____.

A. caterpillars     B. parasitic wasps    C. wasps’ eggs     D. a plant’s leaves

54. What can be inferred from the last paragraph?

A. Other animals may communicate in the same way.

B. There will be further research into this phenomenon.

C. Part of the study is a PhD project.

D. The Free Completion of NWO Earth and Life Sciences has the patent for these results.

55. What would be the best title for this passage?

A. Insects use plants as a telephone.         B. Insects live in harmony with each other.

C. No species can live alone.               D. Plants and animals have an effect on each other.

 51～55 BBDBA  

练习册系列答案
相关题目

   下面是几篇有关英国博物馆的信息, 请阅读下列资料和相关信息, 并按照要求匹配信息。

首先, 请阅读下列资料介绍:

a. Explore the natural history of the planet Earth from the prehistoric era to the present day at one of London’s most visited museums. In 1881, the Natural History Museum moved to its present venue. Designed by Alfred Waterhouse, this building is now one of London’s most beautiful and most recognised. These hallowed halls now house more than 300 years’ worth of collections, with over 68 million specimens. Broadly divided into Life and Earth galleries.

b. The British Museum is one of London’s top tourist attraction as well as being a major scholarly resource and Royal history. Its collection was bequeathed to the nation in 1753 and the Museum’s distinctive Greek revivalist structure was built during the 19th Century. The collection expanded massively during the hey-day of the British Empire. And if you haven’t got time for a proper visit, drop in for a coffee at the lovely Court Restaurant. Admission: free.

c. This magnificent Georgian edifice, found on the northern side of Trafalgar Square, houses a massive collection of Western European art. Designer Marc Newson presents two new blockbuster exhibitions to his gallery. The National Gallery, which showcased recent retrospectives. This exhibition traces the rise of the Italian Renaissance artist, and gather more than 100 pieces of his collection.

d. There are mausoleums, catacombs and ornate crumbling tombs of eminent writers, politicians and artists in the rambling, overgrown west section of this woodland graveyard. Celebrity corpses include Karl Marx, Michael Faraday and Christina Rossetti. Be aware that you must purchase a photography license in order to take photographs within the cemetery. Take advantage of the special guided tours.

e. The Science Museum’s seven floors offer opportunities to explore the history of technology as well as to glimpse the future. Setting off from Launchpad, where you can get to grips with the laws of science, you can move on to a vast array of interactive galleries which demand audience participation—whether it be of the hands- on or brain—stimulating kind. From medical history to nuclear physics, it’s all covered. Challenging the perception amongst many children that science is boring, the multitude of things to press, touch, watch and think about make this museum a firm favourite with the kids.

f. Predominantly a decorative arts museum, the V&A is a comprehensive collection of everything from sculpture to photographs, from Chinese art to art deco. Among others, the V&A houses the recently refurbished Raphael Gallery, home to seven tapestry cartoons by Raphael that are among Britain’s greatest art treasures and part of the Royal Collection. There is a lot to see from the Becket Casket to the Canon photography.

请阅读以下参观者的信息, 然后匹配参观者和他/ 她拟要参观的博物馆:

1. Tedy, a young official who is quite interested in photo- taking and sculpture. He spends all his spare time doing his favorite things.

2. Rusial, a beautiful lady with a fair hair, who gives painting lectures to the students in a college. She herself is a super fan of such artists as Da Vinci, Micheangelo, Raphael.

3. Mr. Green, a free careerist, makes a living by writing short plays which mostly tell the history of Great Britain. Besides, he is also a heavy coffee drinker.

4. Tim, 18 years old, a pre- engineering boy student, full of energy and rich in imagination.

5. Ms Denis, a widelife lover. She takes an active part in protecting the earth and enjoy herself by doing sports.

参观者 博物馆

1. Tedy       A. the Natural History Museum

2. Rusial      B. The British Museum

3. Mr. Green  C. The National Gallery

4. Tim        D. Highgate cemetery

5. Ms Denis   E. The Science Museum

F. Victoria and Albert Museum


C
Not even Dan Brown and his Da Vinci code—breakers(密码破译者)dared deal with the mystery of Mona Lisa，s smile．But Nicu Sebe，a computer expert the University of Amsterdam，the Netherlands，did．He used’emotion recognition’software to process the famous painting and found Mona Lisa happy(83 per cent)and slightly disgusted(厌烦的)(9 per cent)．
Faces show emotions. Psychology，computer science，and engineering researchers are joining forces to teach machines to read expressions．If they succeed，your computer may one day“read”your mood．Machines equipped with emotional skills could also be used in teaching，gaming，mind－reading，etc.
“Mind Reader”，a system developed by Rosalind Picard at MIT(the Massachusetts Institute of Tech’nology)in the US, uses input from a video camera to do real—time analysis of facial expressions. It reports on whether you seem“interested”or“agreeable”or if you’re“confused”．The system can help people recognize others’emotions．Picard says this means we could teach a machine to be as sensitive as a human．In fact，a machine can be even smarter than people since it can tell if a person is lying or just“performing”by analyzing one’s facial movements．
Jeffrey Cohn，a psychologist at the University of Pittsburgh，uses the Facial Action Coding System to recognize human emotions．The system sorts more than 40 action units(AUs)of the face to tell people’s real emotions．He studied a videotape of a criminal who said to be sad about the murder of several family members and tried to pin the blame on someone else．But Cohn saw no real sadness in the woman’s face.
Sadness is a group of AUs that is difficult to do at the same time．You have to pull down the woman’s of your lips while bringing your eyebrows together and raising them．What the woman did was raise her cheeks to make a lip cud(撇嘴)。Her brows stayed smooth．
64．The best title of this passage is“ ________ ”．
A．The emotion on your face                    B．Look at your face
C．Your face tells a story                          D．Telling a lie
65．The missing sentence“This means，even though your mouth lice，your face doesn’t，and the machine will know it all. ”should be put at the end of ___________．
A．Paragraph 2   B．Paragraph 3      C．Paragraph 4     D．Paragraph 5
66．How many facial emotion analyses are mentioned in this passage?
A．Four．               B．Three．              C．Two．         D．One
67．The underlined word“it”refers to________．
A．MIT                                 B．the video camera
C．one’s face emotion            D．the real—time analysis


D
A mysterious machine found in a 2,000-year-old Greek shipwreck may have been used to calculate the positions of planets, predict when eclipses (日、月蚀) were to occur, and study other parts of astronomy (天文学). When it was found underwater about 100 years ago, the machine was in poor shape. Its metal pieces had become one mass (堆), and then broke into pieces.
When the researchers began to study what was left of the machine, they thought it might have something to do with astronomy. To find out more, they recently used advanced imaging methods, including X-ray computer tomography (断层摄影术), to look inside the metal parts and to check for ancient writing on the machine.
According to their research, the researchers believed that this machine could have been used to compute eclipses of the sun and moon and was also able to show the movements of planets. A user could pick a day in the future and, work out a planet’s position on that date by moving some sort of crank (曲柄) on the machine.
Besides, the researchers discovered that the machine had at least 30 bronze gears (齿轮) with as many as 225 teeth, likely all cut by hand.
With all the collected information, the researchers came up with a new model for how the machine operated. The model has 29 of the 30 known gears and five more that were probably there but never found. Also，the new picture adds a previously undiscovered spiral dial (螺旋刻度盘) to the back of the machine near the bottom. A hand moving around the dial could have pointed to eclipses over a period of 18 years.
71. The passage is most probably taken from _____.
A. a short-story collection
B. a popular science magazine
C. a political report
D. an old personal diary
72. What is the passage mainly about?
A. New research on calculating the positions of planets.
B. A popular way of computing eclipses of the sun and moon.
C. Scientists’ interest in the secrets of a 2,000-year-old Greek shipwreck.
D. A mysterious machine which could be used for astronomical research.
73. What do we learn from the third paragraph of the passage?
A. The machine might have been used to calculate the positions of the planets.
B. Scientists made great progress in predicting eclipses of the sun and moon.
C. The researchers discovered some secrets in the Greek shipwreck.
D. The machine can be of great help for people working out the sizes of planets.
74. The researchers made a new model because they____.
A. wished to repair the broken machine
B. wanted to study the shipwreck more conveniently
C. hoped to know how the machine worked
D. expected it to be used in modern scientific research
75. Which of the following statements is TRUE about the old machine?
A. It has 35 gears on it.
B. It has a spiral dial.
C. It was invented about 100 years ago.
D. Its gears have many teeth.

 

第二节：Tedy、Rusial、Mr Green、Tim 和Ms Denis 要参观博物馆,第61-65题是他们的个人情况介绍。阅读下面六家英国博物馆的简介（A、B、C、D、E和F）,选出符合个人需要的最佳选项,并在答案纸上将该选项标号涂黑。选项中有一项是多余选项。

61. Tedy, a young official who is quite interested in photo-taking and sculpture. He spends all his spare time doing his favorite things.

62. Rusial, a beautiful lady with a fair hair, who gives painting lectures to the students in a college. She herself is a super fan of such artists as Da Vinci, Micheangelo, Raphael.

63. Mr. Green, a free careerist, makes a living by writing short plays which mostly tell the history of Great Britain. Besides, he is also a heavy coffee drinker.

64. Tim, 18 years old, a pre-engineering boy student, full of energy and rich in imagination.

65. Ms Denis, a wildlife lover. She takes an active part in protecting the earth and enjoys herself by doing sports.

 

A. Explore the natural history of the planet Earth from the prehistoric era to the present day at one of London’s most visited museums. In 1881, the Natural History Museum moved to its present venue. Designed by Alfred Waterhouse, this building is now one of London’s most beautiful and most recognized. These holy halls now house more than 300 years’ worth of collections, with over 68 million specimens(标本). Broadly divided into Life and Earth galleries.

 

B. The British Museum is one of London’s top tourist attractions as well as being a major scholarly resource and Royal history. Its collection was given to the nation in 1753 and the Museum’s distinctive Greek revivalist structure was built during the 19th Century. The collection expanded massively during the hey-day（全盛期）of the British Empire. And if you haven’t got time for a proper visit, drop in for a coffee at the lovely Court Restaurant. Admission: free.

 

C. This magnificent Georgian edifice, found on the northern side of Trafalgar Square, houses a massive collection of Western European art. Designer Marc Newson presents two new exhibitions to his gallery. The National Gallery, shows the development of the artists. This exhibition traces the rise of the Italian Renaissance artist, and gathers more than 100 pieces of his collection.

 

D. There are mausoleums, catacombs and richly decorated tombs of outstanding writers, politicians and artists in the overgrown west section of this woodland graveyard. Celebrity dead bodies include Karl Marx, Michael Faraday and Christina Rossetti. Be aware that you must purchase a photography license in order to take photographs within the cemetery. Take advantage of the special guided tours.

 

E. The Science Museum’s seven floors offer opportunities to explore the history of technology as well as to glimpse the future. Setting off from Launchpad, where you can get to grips with the laws of science, you can move on to a vast display of interactive galleries which demand audience participation—whether it be of the hands-on or brain-stimulating kind. From medical history to nuclear physics, it’s all covered. Challenging the idea amongst many children that science is boring, various things to press, touch, watch and think about make this museum a firm favourite with the kids.

 

F. Mainly a decorative arts museum, the V&A is a comprehensive collection of everything from sculpture to photographs, from Chinese art to art decor. Among others, the V&A houses the recently redecorated Raphael Gallery, home to seven tapestry cartoons by Raphael that are among Britain’s greatest art treasures and part of the Royal Collection. There is a lot to see from the Becket Casket to the Canon photography.

 

Traditional surgical procedures require surgeons to make large incisions(伤口) in a patient’s body in order to gain access to the internal organs. It was once common for heart surgeons, who perform highly specialized and complex procedures, to make long incisions in a patient’s chest and then split the breastbone to reach the heart. Patients who undergo surgery are often at the risk of infection, as bacteria can infect the cut in the skin. In addition, there is often a lengthy recovery period.

A surgical technique known as “keyhole surgery” has become more common in recent years. In general, the surgeon will make a couple of small incisions around the area where the operation is going to be performed. Tubes are pushed into the holes, and a tiny camera, which is called an endoscope, is put into the body. The camera is attached to a large monitor screen that is positioned so that the doctor can see it while he performs the operation. In addition to the camera, doctors also push their tiny surgical instruments through the tubes. The awkward part of keyhole surgery is that it is counterintuitive; that is to say, if a surgeon wants to move the tool to the left, he or she must push it to the right.

Other advancements in technology are also being used today in the OR (operation room). A new machine called the “da Vinci Surgical System” has been tested in hospitals in the U.S.. Unlike keyhole surgery, the da Vinci’s robot’s moving parts are designed to imitate the natural hand and wrist movement of a surgeon, thus providing better control and sensitivity. The system is controlled by a surgeon from a console(控制台). Sitting at a console a few feet from the patient, the surgeon can perform an operation by holding and moving highly sensitive pads that enable him or her to control the instruments. The area of the body on which the surgeon is working is enlarged on a screen, which is attached to the console. This gives surgeons a realistic three-dimensional view of the area — similar to what they would see during a traditional surgical procedure.

Although the da Vinci Surgical System is undergoing some trials for some procedures, it has been welcomed as revolutionary by many surgeons. Patients with serious illnesses must still undergo major surgery, but the smaller incisions and less invasive procedures typically mean that a shorter recovery time is needed. In some cases, the patient’s stay in the hospital has been cut in half when the da Vinci Surgical System was used. On the downside, some operations have taken up to fifty minutes longer because surgeons are inexperienced at using the new technology. As surgeons become more familiar with the machines, the time needed for surgical procedures is likely to decrease.

1.What can be learned about the traditional surgery according to the passage?

A．The cost of the traditional surgery is very high.

B．It often leaves a large wound in a person’s body.

C．Long incisions are made in a patient’s chest.

D．The incision is often infected after the operation.

2. Which of the following is one DISADVANTAGE of keyhole surgery?

A．It requires the use of long, thin tools and a tiny camera.

B．The doctor can not view the inside of the patient’s body clearly.

C．The direction in which a doctor moves the surgical tools is reversed.

D．An endoscope has to be inserted into the patient’s body in advance.

3. The da Vinci Surgical System differs from keyhole surgery in that _______.

A．requires that a surgeon make more small incisions on a patient

B．reduces the amount of time it takes to perform a surgical procedure

C．allows the surgeon to use the surgical instruments more sensitively

D．eliminates the need for surgeons to make large incisions on patients

4. The passage mainly tells the reader ________.

A．the challenges brought about by new technology

B．the benefits and drawbacks of the da Vinci Surgical System

C．the reflections on the development in medical science

D．the application of new technologies in modern surgery

 

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网