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To slow down eye damage, people with diabetes should try to
A．use as many medications as they can.
B．eat as little as possible.
C．wear glasses as often as possible.
D．keep their blood sugar under tight control.
答案
更多“To slow down eye damage, people with diabetes should try to A．use as many medi”相关的问题
第1题
To slow down eye damage，people with diabetes should try to
A．use as many medications as they can．
B．eat as little as possible．
C．wear glasses as often as possible．
D．keep their blood sugar under tight control
第2题
To slow down eye damage, people with diabetes should try to
A．use as many medications as they can.
B．eat as little as possible.
C．wear glasses as often as possible.
D．keep their blood sugar under tight control.
第3题
Eye Movement and Several Faults in Reading
Suppose you do this experiment with a friend. Get hold of a book with a large page size and lines that run right across the page. Get your friend to hold the book up and to read it with the top of the book just below his eye level. This means that you can watch the movement of his eyes as he reads the page. If you do this, you will see that your friend's eyes do not make a continuous forward sweep. Instead, they progress by little "jumps" moving, then stopping, as they progress along the line. This kind of jumping movement is called a saccadic movement(跳跃).
There has to he this starting and stopping movement because the eye can see only when it is still motionless. Every time the eye pauses it sees a phrase or even a sentence then jumps to the next part of the line and so on.
There is another interesting fact about eye movement. If you record the eye movements of someone who is reading, you will notice that, from time to time, the reader goes back and looks again at something he has read before; in other words, he regresses(回视) an earlier part of the text, probably because he realizes he does not understand the passage properly. Then he comes back to where he left off and continues reading. At one time, it was though that regression was a fault, but it is in fact a very necessary activity in efficient reading.
There are several different kinds of faults in reading, which are usually more exaggerated with foreign language learners. The most common one is that most people read everything at the same slow speed, and do not seem to realize that they can read faster or slower as required. Other people say the words to themselves, or move their lips-these habits slow the reader down to something near speaking speed, which is of course much slower than reading speed. Another habit that can slow you down is following the line with your finger, or with a pen.
What phenomenon can you see in the experiment mentioned at the beginning of the passage？
A．People's eyes sweep forward continuously while reading.
B．People's eyes do not make a forward sweep while reading.
C．People's eyes do not "jump" forward while reading.
D．People's eyes move forward in a "jumping" way while reading.
第4题
Keep an Eye on CEOs
Government policy decisions could speed or slow the pace of rehabilitation for the banks, and (31) turn, the stock market. David A. Hendler, a New York-based bank analyst at Credit-Sights, says his job has shifted from financial analysis toward Washington analysis. Essentially, his task is to figure (32) how quickly the government will permit weak banks to consolidate. When investors believe (33) know which banks will survive, they'll buy their stocks. The process is (34) critical to the stock market that Richard Bernstein, chief investment strategist at Merrill Lynch, is tracking six signposts for financial industry consolidation. Among them: the extent to which the government carves up and sells bad banks rather than buying into them to prop them (35) Other strategists are keeping a close eye on the people who really know what's happening in the economy: business leaders. Biderman says he'll know corporations are getting confident (36) they start buying back their own shares and acquiring other companies. Right now they show no such bravado. Announcements of share buybacks are down 90% from a year ago, leaving that market thermometer so cold that the mercury is off the scale.
In the end, the timing of the bear's retreat (37) likely hinge on that great market imponderable: psychology. How investors feel has a lot to do with (38) they start seeing mixed signals as proof of a glass half-full. "The market stress causes the analytical part of our brains to shut down, and that makes us hyperreactive (39) bad news, "says Michael A. Ervolini, CEO of Cabot Research, a consultancy catering to institutional investors. People become convinced conditions are worse than rock-bottom bad, he says. Only (40) they see that they've overacted can things improve: "We look for the market to start saying tomorrow will be brighter."
(31)
第5题
Take to the Hills!
The rider galloped at top speed down the hill and on into the valley, through the pouring rain. "The dam is going!" A few residents of Johnstown, Pennsylvania, took the rider's advice —and lived. Thousands of people, however, either never got the rider's message or chose to disregard it. Many of those who didn't heed the warning paid with their lives.
The citizens of Johnstown in 1889 had good reason for ignoring the advice. Once a year the old South Fork Dam seemed about to burst. The cry, "Take to the hills." had become an annual false alarm.
This time, however, the rider's warning should have been taken in earnest. The rider was John G. Parke, a civil engineer who was in charge of the dam.
The Great South Fork Dam was a huge earthen dike holding back the waters of an artificial lake. The dam had been constructed without any stone or cement. It had been built by piling up layer upon layer of soil, until the dam was 100 feet high. It was 90 feet wide at its base.
The dam had passed through the hands of a series of owners. In recent years the dam and the lake behind it had been bought by a group of millionaires. The millionaires called themselves the Great South Fork Fishing and Hunting Club. They spent thousands of dollars stocking the lake with fish. They also added screens to prevent the fish from getting out through the dam's drainage holes.
Fishing was good, and the lake had never been higher than that spring of 1889. May had been an unusually rainy month. The streets in the lower parts of Johnstown were already flooded with six feet of water. Behind the dam, the lake had been rising at the rate of one foot per hour. The owners of the fishing club sent workers to pile more dirt on top of the dam to keep it from overflowing. The owners also ordered the workers to remove the screens, which had become jammed with fish, sticks, and other debris. The workers tried hard to clear the jam, but John Parke's trained engineer's eye could see that their efforts would be useless. Parke saddled a horse and began his ride through the valley warning people of the arriving floodwater.
The rain continued to pour. At noon, the water washed over the top of the dam. Almost immediately a big notch developed in the top of the dike. Then, according to witnesses, the whole dam simply disappeared. One minute there was a dam, and the next minute —nothing. The lake moved into the valley like a living thing. In little more than half an hour, the dam emptied completely, sending 45 billion gallons of water down the valley toward Johnstown. A wave of water reaching 125 feet high raced toward the city, leaping forward at the rate of 22 feet per second.
The huge wall of water approached East Conemaugh, a suburb of Johnstown. As it did, railroad engineer John Hess looked up from the string of freight cars his locomotive was pushing. He saw the water bearing down on him, now moving at 50 miles per hour. Hess moved the locomotive's throttle to wide open. Still pushing a string of freight cars before him, he raced the advancing flood into East Conemaugh. Hess tied down the locomotive's whistle, and its screaming blast preceded the train into the village. Johnstown was a railroad city. People in the whole Johnstown area knew that a tied-down whistle could only mean a disaster. And the already flooded streets told them what kind of disaster it was. Many people who had ignored earlier warnings now headed for the hills. Unable to reach the center of Johnstown, railroader Hess jumped from the locomotive cab in East Conemaugh, ran into his house, and roused his family. The Hesses made their way up the side of a hill just before the flood hit the village.
As the great tumbling hill of water roared on toward the center of Johnstown, it ran into the East Conemaugh rail yard. In the yard was a roundhouse (机车库) contain
A．Y
B．N
C．NG
第6题
Sleep
Sleep is part of a person's daily activity cycle. There are several different stages of sleep, and they too occur in cycles. If you are an average sleeper, your sleep cycle is as follows. When you first drift off into slumber, your eyes will roll about a bit, your temperature will drop slightly, your muscles will relax, and your breathing will slow and become quite regular. Your brain waves slow down a bit too, with the alpha rhythm of rather fast waves predominating for the first few minutes. This is called stage 1 sleep. For the next half hour or so, as you relax more and more, you will drift down through stage 2 and stage 3 sleep. The lower your stage of sleep, the slower your brain waves will be. Then about 40 to 60 minutes after you lose consciousness you will have reached the deepest sleep of all. Your brain waves will show the large slow waves that are known as the delta rhythm. This is stage 4 sleep. You do not remain at this deep fourth stage all night long, but instead about 80 minutes after you fall into slumber, your brain activity level will increase again slightly. The delta rhythm will disappear, to be replaced by the activity pattern of brain waves. Your eyes will begin to dart around under your closed eyelids as if you were looking at something occurring in front of you. This period of rapid eye movement lasts for some 8 to 15 minutes and is called REM sleep. It is during REM sleep period, your body will soon relax again, your breathing will grow slow and regular once more, and you will slip gently back from stage 1 to stage 4 sleep-only to rise once again to the surface of near consciousness some 80 minutes later.
Every stage of sleep occur in cycles.
A．Right
B．Wrong
C．Not mentioned
第7题
Sleep is part of a person's daily activity cycle. There are several different stages of sleep, and they too occur in cycles. If you are an average sleeper, your sleep cycle is as follows. When you first drift off into slumber (安睡), your eyes will roll about a bit, your temperature will drop slightly, your muscles will relax, and your breathing were slow and become quite regular. Your brain waves slow down a bit too, with the alpha rhythm of rather fast waves predominating for the first few minutes. This is called stage 1 sleep. For the next half hour or so, as you relax more and more, you will drift down through stage 2 and stage 3 sleep. The lower your stage of sleep, the slower your brain waves will be. Then about 40 to 60 minutes after you lose consciousness you will have reached the deepest sleep of all. Your brain waves will show the large slow waves that are known as the delta rhythm. This is stage 4 sleep. You do not remain at this deep fourth stage all night long, but instead about 80 minutes after you fall into slumber, your brain activity level will increase again slightly. The delta rhythm will disappear, to be replaced by the activity pattern of brain waves. Your eyes will begin to dart around under your closed eyelids (眼皮) as if you were looking at something occurring in front of you. This period of rapid eye movement lasts for some 8 to 15 minutes and is called REM sleep. It is during REM sleep period, your body will soon relax again, your breathing will grow slow and regular once more, and you will slip gently back from stage 1 to stage 4 sleep — only to rise once again to the surface of near consciousness some 80 minutes later.
The stages of sleep take on ____
A) an irregular aspect.
B) a regular aspect
C) a punctual aspect
D) a similar aspect
本题为单选题，请给出正确答案及解析，谢谢！
第8题
根据下列材料，请回答题
Sleep
Sleep is part of a person’s daily activity cycle．There are several different stages of sleep．And they too occur in cycles_____（46）When you first drift off into slumber，your eyes will roll about a bit，your temperature will drop slightly，your muscles will relax，and your breathing will slow and become quite regular．Your brain waves slow down a bit t00，with the alpha rhythm of rather fast waves predominating for the first few minutes_____ （47）For the next half hour or so，as you relax more and more，you will drift down through stage 2 and stage 3 sleep．_____ （48）Then about 40 to 60 minutes after You lose consciousness you will have reached the deepest sleep of all．Your brain waves will show the large slow waves that are known as the delta rhythm．
This is stage 4 sleep．You do not remain at this deep fourth stage all night long．but instead about 80 minutes after you fall into slumber，your brain activity level will increase again slightly．_____ （49）Your eyes will begin to dart around under your closed eyelids as if you were l00-king at something occurring in front of you _____ （50）It is during REM sleep period，your body will soon relax again，your breathing will grow slow and regular once more，and you will slip gently back from stage l to stage 4 sleep—only to rise once again to the surface of near consciousness some 80 minutes later．
回答（46）题 查看材料
A.The delta rhythm will disappear，to be replaced by the activity pattern of brain waves．
B.If you are an average sleeper，your sleep cycle is as follows．
C.In stage 4 sleep people tend to dream．
D.The lower your stage of sleep，the slower your brain waves will be．
E.This period of rapid eye movement lasts for some 8 to 1 5 minutes and is called REM sleep．
F.This is called stage l sleep．
第9题
You do not remain at this deep fourth stage all night along, but instead about 80 minutes after you fall into slumber, your brain activity level will increase again slightly. The delta rhythm will disappear, to be replaced by the activity pattern of brain waves. Your eyes will begin to dart around under your closed eyelids as if you were looking at something occurring in front of you. This period of rapid eye movement lasts for some 8 to 15 minutes and is called REM sleep. It is during REM sleep that most dreams seem to occur.
Provided that you do not wake up during the first REM sleep period, your body will soon relax again, your breathing will grow slow and regular once more, and you will slip gently back from stage 1 to stage 4 sleep — only to rise once again to the surface of near consciousness some 80 minutes later.
Which of the following does the passage mainly discuss？
A．Scientific methods of studying sleep.
B．Why humans require sleep.
C．The phases of sleep.
D．Why dreams occur during REM sleep.
第10题
Questions 26 to 30 are based on the following passage:
Sleep is part of a person's daily activity cycle. There are several different stages of sleep, and they too occur in cycles. If you are an average sleeper, your sleep cycle is as follows. When you first drift off into slumber (安睡), your eyes will roll about a bit, your temperature will drop slightly, your muscles will relax, and your breathing were slow and become quite regular. Your brain waves slow down a bit too, with the alpha rhythm of rather fast waves predominating for the first few minutes. This is called stage 1 sleep. For the next half hour or so, as you relax more and more, you will drift down through stage 2 and stage 3 sleep. The lower your stage of sleep, the slower your brain waves will be. Then about 40 to 60 minutes after you lose consciousness you will have reached the deepest sleep of all. Your brain waves will show the large slow waves that are known as the delta rhythm. This is stage 4 sleep.
You do not remain at this deep fourth stage all night long, but instead about 80 minutes after you fall into slumber, your brain activity level will increase again slightly. The delta rhythm will disappear, to be replaced by the activity pattern of brain waves. Your eyes will begin to dart around under your closed eyelids (眼皮) as if you were looking at something occurring in front of you. This period of rapid eye movement lasts for some 8 to 15 minutes and is called REM sleep. It is during REM sleep period, your body will soon relax again, your breathing will grow slow and regular once more, and you will slip gently back from stage 1 to stage 4 sleep — only to rise once again to the surface of near consciousness some 80 minutes later.
26.The stages of sleep take on ____.
A) an irregular aspect. B) a regular aspect C) a punctual aspect D) a similar aspect
27.Stage 4 sleep lasts ____.
A) about 80 minutes
B) about 40 60 minutes
C) about 30 munutes
D) about 20 40 minutes
28.The brain waves are the slowest during ____.
A) stage 1 C) stage 4 B) stage 2 and stage 3 D) REM sleep
29.In the second paragraph the word “dart” means ____.
A) glare B) move rapidly or suddenly C) stop moving D) gaze
30.One of the features of REM sleep is that ____.
A) there are large slow waves, though rapid for the first few minutes
B) you have the deepest sleep
C) there are no brain waves
D) the brain waves are a little fast and the brain becomes a little active
