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Color is very important to most animals for it helps them to get along in the world. Color

【B1】to make an animal difficult for its enemies to see. Many animals match their【B2】so well that as long as they do not move no one is【B3】to see them. You probably have often "jumped" a rabbit. If you【B4】, you know how the rabbit sits perfectly still【B5】you are just a few feet away. You【B6】see the rabbit till it runs for its【B7】matches very closely the place where it is【B8】Many times you may have walked past a rabbit【B9】didn't run and you never knew it was there at all.

One of the most usual color schemes that helps animals to keep【B10】being seen, is a dark back and light underpants, if an animal is the same color all over, there is always a dark shadow along the animal's belly(腹部). Even if an enemy couldn't see the animal he could see this dark shadow.

【B1】

A.helps

B.contributes

C.tries

D.manages

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更多“Color is very important to mos…”相关的问题
第1题
The today was very different from the one we had before()the teacher asked us to draw.

A.exam

B.color

C.dessert

D.housework

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第2题
填空题 "Thank you for your ( ) of May 3 for men’s and women’s leather gloves and also for the ( ) you sent us.

Having looked over your samples, we found both the quality of the leather used and workmanship are up to our ( ) . And we are pleased to place the following order with you: 300 pairs of women’s leather gloves in red color Size: No.26 each pair at US$5CIF Hamburg. 200pairs of men’s leather gloves in black. Size: No. 30, each pair at US$6CIF Hamburg. Our order is subject to your ( ) of our usual terms of payment, ( ) 20days after sight. If this order is executed satisfactorily, we shall be happy to place further orders with you.

Yours faithfully,

China National Import & Export Corp.

Manager"

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第3题
The statement "As they smiled and gurgled at the moving mobile" (line 7, para. 2) suggests

The statement "As they smiled and gurgled at the moving mobile" (line 7, para. 2) suggests that ______.

A.the infants liked the beautiful color of the mobile although they couldn't say so

B.the infant were happy because the cribs were very comfortable to sleep in

C.the infants realized the connection between the motion of one leg and the bobbing of the mobile

D.the infants wanted to grasp the bobbing mobiles and keep them

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第4题
As one works with color in a practical or experimental way, one is impressed by two appare
ntly unrelated facts. Color as seen is a mobile changeable thing depending to a large extent on the relationship of the color to other colores seen simultaneously. It is not fixed in its relation to the direct stimulus which creates it. On the other hand, the properties of surfaces that give rise to color do not seem to change greatly under a wide variety of illumination colors, usually (but not always) looking much the same in artificial light as in daylight. Both of these effects seem to the due in large part to the mechanism of color adaptation mentioned earlier.

When the eye is fixed on a colored area, there is an immediate readjustment of the sensitivity of the eye to color in and around the area viewed. This readjustment does not immediately affect the color seen but usually does affect the next area to which the gaze is shifted. The longer the time of viewing, the higher the intensity, and the larger the area, the greater the effect will be in terms of its persistence in the succeeding viewing situation. As indicated by the work of Wright and Schouten, it appears that, at least for a first approximation, full adaptation takes place over a very brief time if the adapting source is moderately bright and the eye has been in relative darkness just previously. As the stimulus is allowed to act, however, the effect, becomes more persistent in the sense that it takes the eye longer to regain its sensitivity to lower intensities. The net result is that, if the eye is so exposed and then the gaze is transferred to an area of lower intensity, the loss of sensitivity produced by the first area will still be present and appear as an "afterimage" super imposed on the second. The effect not only is present over the actual area causing the "local adaptation" but also spreads with decreasing strength to adjoining areas of the eye to produce "lateral adaptation". Also, because of the persistence of the effect if the eye is shifted around from one object to another, all of which are at similar brightnesses or have similar colors, the adaptation will tend to become uniform. over the whole eye.

This selection is concerned primarily with ______.

A.the eye's adaptation to color

B.the properties of colored surfaces

C.the effect of changes in color intensity

D.experiments on colored objects

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第5题
The English language we know today is about six hundred years old. For half that time, Eng
lish was just the language of the people living in England. The modern English language grew by about the year 1 400. Now English is the most widely spoken language in the world. It is one of the working languages at international meetings, business, science and other fields.

The differences between American English and British English are not very great. Written English is more or less the same in both Britain and America, though there are some spelling differences. For example, centre, licence, colour and travelled are spelt as center, license, color and traveled in American English. In America "cock, rubber, iii, holiday, lorry, post... "are called "rooster, eraser, sick, vacation, truck, mail..." But people from the two countries can still understand each other easily.

There are only a very small number of differences in grammar between American English and British English. The most important differences are in spoken English. For example, Americans pronounce "tomato" differently from English people.

You may wonder "Which is correct?" The answer is that it does not matter. You should speak either American English or British English. But do not try to speak both at the same time.

When was English only spoken in England?

A.About the 6th century.

B.Before the 17th century.

C.Before the 14th century.

D.Before the 15th century.

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第6题
Jill has a small shop which sells clothes. She buys them wholesale, and then puts on
e of

each in her shop where customers can look at all her range. She rents a large warehouse to

keep her stock. All her dresses are selling well. Her business is making a good profit which

she wants to invest to expand her business. Jill asked her bank manager for advice. He

suggested having a homepage on the lnternet, and selling her clothes online. Internet

shopping suits her business model, because she buys many dresses all the same color to get a low nrprice. She can reach more customers online, and sell more dresses. This will increase her business quickly without buying a larger shop.

(1) Jill has a lot of dresses in stock.

(2) Jill buys her dresses very cheaply.

(3) She asks her bank manager for a loan.

(4) The bank manager suggests selling her business.

(5) The lnternet will expand her business.

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第7题

Packaging is a very important form. of advertising. A package can sometimes motivate people to buy products. For example, a small child might ask for a breakfast food contained in a box with a picture of a TV character. The child is more interested in the picture than in breakfast food. Pictures for children to color or cut out, games printed on a package, or a small gift inside a box also motivate many children to buy products -- or to ask their parents to buy for them.

Some packages suggest that a buyer will get something for nothing. Food products sold in reusable containers are examples of this. Although a similar product in a plain container might cost less, people often prefer to buy the product in a reusable glass or dish, because they believe the container is free. However, the cost of the container is added to the cost of the product.

The size of a package also motivates a buyer. Maybe the package has "Economy Size" or" Family Size" printed on it. This suggests that the larger size has the most product for the least money. But that is not always true. To find it out, a buyer has to know how the product is sold and the price of the basic unit.

The information on the package should provide some answers. But the important thing for any buyer to remember is that a package is often an advertisement. The words and pictures do not tell the whole story. Only the product inside can do that.

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B.a buyer will get more than what he pays for

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D.a buyer will get more but pay less

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第8题
Large animals that inhabit the desert have evolved a number of adaptations for reducing th
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Another strategy of large desert animals is to tolerate the loss of body water to a point that would be fatal for non-adapted animals. The camel can lose up to 30 percent of its body weight as water without harm to itself, whereas human beings die after losing only 12 to 13 percent of their body weight. An equally important adaptation is the ability to replenish (Sheik) this water loss at one drink. Desert animals can drink huge volumes in a short time, and camels have been known to imbibe (吸收) over 100 liters in a few minutes. A very dehydrated person, on the other hand, cannot drink enough water to rehydrate at one session, because the human stomach is not sufficiently big and because a too rapid dilution of the body fluids causes death from water intoxication. The tolerance of water loss is of obvious advantage in the desert, as animals do not have to remain near a water hole but can obtain food from grazing sparse pastures. Desert-adapted mammals have the further ability to feed normally when extremely dehydrated, it is a common experience in people that appetite is lost even under conditions of moderate thirst.

What is the passage mainly about?

A.Animals developed different strategies to survive.

B.Large animals can take strategies to reduce the effect of extreme heat.

C.Animals can tolerate the loss of body water.

D.A very dehydrated person can drink enough water to rehydrate.

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第9题
用Python创建图,我们需要做以下哪个操作?()

A.import matplotlib

B.import pyplot

C.import matplotlib.pyplot

D.import matplotlib import pyplot

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第10题
Robots May Allow Surgery in Space Small robots designed by University of Nebraska research

Robots May Allow Surgery in Space

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“We think this is going to (54)open surgery, ”Dr Dmitry Oleynikov said at a news conference. Oleynikov is a (55)in computer-assisted surgery at the University of Nebraska Medical Center in Omaha.

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Eventually, Oleynikov said, the tiny robots may enable surgeons to work without ever(65)their hands in patients' bodies. “That's the goal, ”Oleynikov said. “It's getting easier and easier. We can do even more with these devices. ”

A.since

B.when

C.which

D.as

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