题目
题型：不详难度：来源：
When you look at something, your eyes send a signal about that object to your brain. Different regions of the brain process the information your eyes send. Cells in your brain called neurons(神经元) are responsible for this processing.
The fMRI (functional Magnetic Resonance Imaging功能性磁共振造影) brain scans could generally match electrical activity in the brain to the basic shape of a picture that someone was looking at.
Like cells anywhere else in your body, active neurons use oxygen. Blood brings oxygen to the neurons, and the more active a neuron is, the more oxygen it will consume. The more active a region of the brain, the more active its neurons, and in turn, the more blood will travel to that region. And by using fMRI, scientists can visualize which parts of the brain receive more oxygen- rich blood--and therefore, which parts are working to process information.
An fMRI machine is a device that scans the brain and measures changes in blood flow to the brain. The technology shows researchers how brain activity changes when a person thinks, looks at something, or carries out an activity like speaking or reading. By highlighting the areas of the brain at work when a person looks at different images, fMRI may help scientists determine specific patterns of brain activity associated with different kinds of images.
The California researchers tested brain activity by having two volunteers view hundreds of pictures of everyday objects, like people, animals, and fruits. The scientists used an fMRI machine to record the volunteers" brain activity with each photograph they looked at. Different objects caused different regions of the volunteers" brains to light up on the scan, indicating activity. The scientists used this information to build a model to predict how the brain might respond to any image the eyes see.
In a second test, the scientists asked the volunteers to look at 120 new pictures. Like before, their brains were scanned every time they looked at a new image. This time, the scientists used their model to match the fMRI scans to the image. For example, if a scan in the second test showed the same pattern of brain activity that was strongly, related to pictures of apples in the first test, their model would have predicted the volunteers were looking at apples.
51. What is responsible for processing the information sent by your eyes?
A A small region of the brain.
B The central part of the brain.
C Neurons in the brain.
D Oxygen-rich blood.
52. Which of the following statements is NOT meant by the writer?
A Cells in your brain are called neurons.
B The more oxygen a neuron consumes, the more blood it needs.
C fMRI helps scientists to discover which parts of the brain process information.
D fMRI helps scientists to discover how the brain develops intelligently.
53. "Highlighting the areas of the brain at work" means
A "marking the parts of the brain that are processing information"
B "giving light to the parts of the brain that are processing information"
C "putting the parts of the brain to work"
D "stopping the parts of the brain from working"
54. What did the researchers experiment on?
A Animals, objects, and fruits.
B Two volunteers.
C fMRI machines.
D Thousands of pictures.
55.What is the best title for the passage?
A Mind-reading Machine
B A Technological Dream
C Device that can Help You Calculate
D The Recent Development in Science and Technology
答案
解析
核心考点
试题【 A team of researchers in California has developed a way to predict what kinds o】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
第二节：完形填空 (共20小题，每小题.1.5分, 共30分)
通读下面短文，掌握其大意，然后在各题所给的A，B，C，D四个选项中，选出一个最佳答案。
Recent studies show that only one out of three people have strong and healthy self-confidence. That 36 two out of every three people simply don’t know the 37 they already have to be successful when it’s 38 there in their hands! 39 if you want others to believe in you, you have to believe in yourself first. Remember: “No one can make you feel inferior (差的)unless you 40 them.” A successful businessman says, “You can’t push anyone up a ladder 41 he knows he can climb himself.”
Many of us have an image 42 , the image（形象） we have of ourselves. 43 one guy put it: “You can’t win a horse race if you think you look 44 on a horse.” To succeed, the first person you have to 45 is yourself! So stop believing your own lies about yourself. Just 46 your mind and you’ll change your life.
One of the most harmful weapons that can kill your success in life are the two little words: “ 47 ”. You know that people used to 48 that if human beings traveled faster than 30 miles an hour it would 49 our circulation（循环）of blood and kill us? Thank goodness a few people didn’t believe that 50 thinking, or we wouldn’t be riding in cars, buses, and flying in airplanes today. You’ll never know until you 51 .
Roger Bannister was the first human being to run a mile in less than 4 minutes. But 52 he did it, most people in the world didn’t think it was even 53 . Yet only weeks after Bannister did it, suddenly 54 all over the world began running a mile in less than 4 minutes! If we believe something can be done, we’ll 55 do it.
36.A. reflects B. means C. reads D. explains
37.A. chance B. strength C. reason D. ability
38.A. immediately B. properly C. right D.accurately
39.A. But B. Because C. What D. While
40.A. challenge B. let C. admit D. help
41.A. if B. except C. unless D. until
42.A. quiz B. question C. mystery D. problem
43.A. As B. When C. While D. Since
44.A. curious B. good-looking C. funny D. serious
45.A. knock B. beat C. strike D. defend
46.A. settle B. bend C. fix D. change
47.A. I failed. B. Not me. C. I can’t. D. Can I?
48.A. think B. imagine C. expect D. doubt
49.A. start B. help C. close D. stop
50.A. empty B. silly C. reasonable D. terrible
51.A. realize B. try C. understand D. judge
52.A. before B. after C. since D. because
53.A. likely B. unbelievable C. impossible D. possible
54.A. runners B. workers C. competitors D. players
55.A. simply B. seldom C. usually D. never
D
As they migrate（迁移），butterflies and moths choose the winds they want to fly with，and they change their body positions if they start floating in the wrong direction．This new finding suggests that insects may employ some of the same methods that birds use for traveling long distances．Scientists have long thought that insects were simply at the mercy of the wind．
Fascinating as their skills of flight are，migrating behavior has been difficult to study in insects because many long distant trips happthousands of feet above ground．Only recently have scientists developed technologies that can detect such little creatures at such great heights．
To their surprise，though，the insects weren’t passive travelers on the winds．In autumn，for example，most light winds blew from the east，but the insects somehow sought out ones that carried them south and they positioned themselves to navigate directly to their wintering homes．
Even in the spring，when most winds flowed northward，the insects didn’t always go with the flow．If breezes weren’t blowing in the exact direction they wanted to go，the insects changed their body positions to compensate．Many migrating birds do the same thing．
The study also found，butterflies and moths actively flew within the air streams that pushed them along．By adding flight speeds to wind speeds，the scientists calculated that butterflies and moths can travel as fast as 100 kilometers an hour．The findings may have real-world applications．With climate warming，migrating insects are growing in number．Knowing how and when these pests move could help when farmers decide when to spray their crops．
71．What’s the main idea of the text?
A．Insects migrate with the seasons． B．Wind helps insects greatly in migrating．
C．Windsurfing insects have real direction．D．Scientists have trouble in observing insects．
72．Scientists originally thought that____________．
A．insects always waited for their favourable winds
B．insects chose the winds they wanted to ride
C．insects were just blown about by the wind
D．insects positioned themselves in the winds
73．It is not easy to stuay the migrating behavior of the insects because____________
A．the little creatures can fly very fast B．they have no regular migrating courses
C．the wind’s direction is hard to foresee D．their flight is long and high above ground
74．We can learn from the text that______________.
A．insects fly in the way birds do
B．insects travel more easily in autumn
C．insects never position themselves when flying low
D．insects rest a lot when the wind pushes them along
75．According to the passage，the findings can ．
A．increase insects in number B．instruct farmers when to spray
C．prevent climate warming D．help protect insects
D
A team of scientists proved that seals had a very good sense of hearing. These men trained blind seals to expect food when they heard sounds. The seals always began snapping(猛咬) when a strong signal was sounded.
It was proved that even a soft signal, a considerable distance away, could make these sea animals respond. That should make the fisherman who makes much noise while working, or talks loudly, start thinking.
The same team of scientists also trained seals to recognize different sounds. One bell-tone meant food ,two bell-tones meant no food. In the beginning, the seals made mistakes when the two bell-tones were sounded. They were given a light tap after each mistake. The seals were good learners. They easily learned to tell the difference between the sounds.
67.Why was it necessary to use blind seals? Because they______.
A. were unable to use sight for clues B. had better hearing
C. were waiting to be fed D. were the only animals to be found
68. To those seals strong signal meant_____.
A. snapping B. nothing C. food D. a light tap
69. The article doesn’t say directly but suggests that fishermen usually think______.
A. seals have no good sense of hearing B. seals have good sense of hearing
C. seals can only recognize bell sounds D. seals can not hear soft or long distant sounds
70. Which title will be the best to suit the article?
A. Clever Seals B. Smart Learners
C. An Underwater School D. An Unknown School
B
The following are the results of the tests done by “Family and Home Magazine” on some Pocket Tape-Recorders on the market now.
Pearlcorder S702 $64
This simple model at the bottom of the Olympus range scored the most points for its excellent quality of recording. Background noise hardly affects the sound and recording from a pocket is perfectly possible, but it doesn’t turn off automatically.
Tape length: 30minutes per side. Weight: 240g.
Sony M9 $49.95
Small and very good looking, Sony’s latest offering scored most for its appearance. Sounds clear, but there is slight machine noise. The big control buttons are a great improvement on some of the complicated little controls on other tape-recorders. It doesn’t switch off automatically, but a red light shows if the machine is still running.
Tape length: 60minutes per side. Weight: 195g.
Sony M400 $115
Lots of little control buttons that make a noise are difficult to use. Recording is good but machine noise loses points. Tape counter and automatic switch-off when tape has finished recording or rewinding are useful.
Tape length: 60 minutes per side. Weight: 230g.
Imperial OEM MC7 $ 29.95
Cheap and simple compared with the rest, but recording is good as long as there is no background noise. Use only its own-make of cassette. No light to show it is on; no fast-forward button and the record button makes a loud noise.
Tape length: 30 minutes per side. Weight: 285g.
Philips 585 $80
Handsome and simple to use, but recording is very poor at more than the recommended distance of 5 cm-designed for dictation. No recording light.
Tape length: 15 minutes per side. Weight: 220g.
46. The machine that produces the best recording with the least unwanted noise is __.
A. Pearlcorder S 702 B. Sony M9
C. Sony M400 D. Imperial OEM MC7
47. If you want a machine which turns off automatically and weighs very little you should choose _____.
A. Pearlcorder S 702 B. Sony M9 C. Sony M400 D. Philips 585
48. Which of the following allows you to record longest but costs you least?
A. Philips 585 B. Imperial OEM MC7 C. Sony M400 D. Sony M9
C
The computer is fast, and never makes a mistake, while people are too slow, and full of mistakes sometimes. That’s what people often say when they talk about computers. For over a quarter of a century, scientists have been making better and better computers. Now a computer can do a lot of everyday jobs wonderfully. It is widely used in factories, hospitals, post office and airports. A computer can report, decide and control in almost every field. Many computer scientists are now thinking of making the computer “think” like a man. With the help of a person, a computer can draw pictures, write music, talk with people, play chess, recognize voice, translate languages and so on. Perhaps computer will one day really think and feel. Do you think the people will be afraid when they find that the computer too clever to listen to and serve the people?
63. A computer is clever because people are _____
A. clever B. not clever C. slow D.making mistakes
64. Which of the following can computers not do now?
A. Draw pictures B. Talk C. Invent new things D.Serve the people
65. What will happen in the future?
A. Most work will be done by the computer. B. People will no longer use computer.
C. Computers will be used only talk with people. D. All computers will be put into prison.
66. The passage is written to __________.
A. warn people of the danger of the computer
B. tell people about the computer
C. tell people about computer scientists
D. show how to use the computer
67. The best title for this passage is _________.
A. “Computers” B. “Computer Scientists”
C. “The Future World” D. “Talk With Computers”
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