What is color？ Why do some objects look red, others green, o..

第1题

Listen again to part of the conversation. Then answer the question. Why does the student s

ay this:

A．To express her fear of very deep water

B．To explain why she likes the color of the ocean

C．To change the topic of the conversation

D．To check her understanding of what the tutor said

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第2题

2. The fruit color of squash is controlled by two ...

2. The fruit color of squash is controlled by two pair of genes W (white) /w and Y (yellow) /y (green). When two plants with white fruit color cross each other, the phenotype of offspring is White: Yellow: Green = 12:3:1. Question: (1) What are the genotype of parents with white fruit color？ (2) Which is the interaction type of these two non-allelic？ (3) What are the genotypes of white, yellow and green fruit plants in the offspring？ (4) If the white fruit color plants in the offspring cross with a green fruit color plant, half of the offspring are yellow. What is the genotype of the white fruit color plant？ Why？

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第3题

Why do astronomers often use photographic plates？A．To decrease the time it takes to photog

Why do astronomers often use photographic plates？

A．To decrease the time it takes to photograph objects.

B．To avoid using a telescope.

C．To sharpen the color of what they observe.

D．To obtain images of distant objects.

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第4题

According to the professor, why is assembling an important function in agricultural market

ing？

A．It allows markets to deal efficiently with large quantities.

B．It gives consumers a variety of products to choose from.

C．It results in products of uniform. size, color, or quality.

D．It helps farmers make decisions about what crops to grow.

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第5题

Why roses are red and violets are blue？ Did you ever wonder why you see the colors you do

Why roses are red and violets are blue？

Did you ever wonder why you see the colors you do or if other animals see the same colors that you see？ We see light that bounces off of things around us. When the light enters our eyes, special cells tell our brains about the light. These cells are called photoreceptors. Light is made of little bits called photons. When the sun shines, trillions and trillions of these little bits of light fall on the earth. The photons bounce off of almost everything and some of them enter our eyes. Those bits that enter our eyes allow us to see. So, where does the color come from？

Starting in the 1600s with Sir Isaac Newton, scientists have believed that there are different kinds of photons. Different types give rise to our sense of colors. The different photons are said to have different wavelengths. Sunlight contains all the different wavelengths of photons. The visible wavelength colors can be seen when you look at a rainbow. Raindrops acting as natural prisms produce the colors.

HOW do our photoreceptors work？

We have two main types of photoreceptors called rods and cones. They are called rods and cones because of their shapes. These cells are located in a layer at the back of the eye called the retina. Rods are used to see in very dim light and only show the world to us in black and white. This is why you see only black and white when you are outside in the evening or in a dimly lit room. The other type of photoreceptors, the cones, allow us to see colors. They are not as sensitive as the rods so they only work in bright light. There are three types of cones, one for each of the three main colors we see, red, green and blue.

Some people have a genetic defect that makes one or more of the cones fail. This condition is known as color deficiency. You may have heard it called color blindness. Color blindness is fairly common, affecting about nine percent of all humans.' It is much more common in men than in women. To test for color blindness a special picture called an Ishihara test is used.

What about other animals？ What kind of colors do they see？ Most animals see fewer colors than we do, but some see more! We know this by looking at how many kinds of cone

photoreceptors they have. Another good indication of what an animal can see is by looking at their own colors. The colors of their prey are also an indication of an animals ability to see color.

What three primary colors do we see？

A．Red, white, and blue.

B．Red, green, and yellow.

C．Red, green, violet.

D．Red, green, blue.

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第6题

Yellow or pink flowers？ The green or blue sweater？ We make decisions about color all the t

ime. Now, scientists are starting to figure【C1】______ why we like the colors we do. It is our experiences that determine which colors we prefer,【C2】______a new study, which was the first to【C3】______ test the long-suspected idea that people like the colors of the things they like. In their【C4】______ to understand why people like certain colors, scientists have【C5】______on evolution. The main theory is that we like colors that are【C6】______ to things that are healthy and promote survival. A blue sky, for example, indicates calm weather, which【C7】______ explain why blue tends to be a (n)【C8】______ color across cultures. Dark yellows and oranges,【C9】______, invoke urine, vomit and rotting food.【C10】______expected, there is usually a drop in preference【C11】______ these colors in studies around the world. 【C12】______ those general trends, there are wide-ranging differences among individuals about which colors they like. As part of a【C13】______of experiments, the researchers showed slide shows of colored objects to a group of【C14】______. They found that people preferred whichever color had been linked to the【C15】______ images they saw, whether red or green. In another【C16】______ study, the researchers found that Berkeley students who【C17】______ highest in school spirit had the strongest preferences for blue and gold, their schools colors, and the most【C18】______ for red and white, the colors of their rival Stanford. Spirited Stanford students showed the opposite【C19】______, suggesting that social connections can influence which colors we like at different times in our lives. People are generally interested in the subtle differences between people and what has【C20】______ that. Color provides a tool to understand why we like some things more than others.

【C1】

A．away

B．up

C．out

D．around

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第7题

听力原文：M: Hi, Linda.W: Hi, James. What am you doing in the mall？ I thought you said you

听力原文：M: Hi, Linda.

W: Hi, James. What am you doing in the mall？ I thought you said you avoid these places and here you arc.

M: Oh, I still do but it's my roommate's birthday tomorrow and I am looking to get him a present. He's not exactly the easiest person to find a present for.

W: Have you any idea what to get？

M: Not really. I want to get him something he will be able to use instead of something he'll just shove into the closet.

W: That's true. I know half the time I get something from somebody I hardly ever use it. And they stay in the closet or garage before they get thrown away.

M: I know, I know. That's the problem. That's why I hate buying gifts for somebody because it can never be perfect. So, I am heading over to the clothing store right now.

W: Perhaps you are trying too hard to get something very impressive or decorative. I always think a gift should be practical. I know what, why don't you think of something he might like or something that he will most likely get soon？

M: Oh, I know. His knapsack is almost wrecked and the zipper has almost had it. Maybe I should get him a knapsack instead.

W: There you go. It sounds like a perfect gift.

M: Gosh, now I am wondering which color I should pick. He is really picky about the color.

W: That's not difficult. What was the last color he chose？ He obviously chose it for a reason.

Where does the conversation take place？

A．In a mall outside a clothing store.

B．In a mall inside a clothing store.

C．In a knapsack store.

D．On the telephone.

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第8题

Red, white, pink, purple – what is your favorite color？ We are all sensitive to color. T

here are some colors we like a lot and some we don’t like at all. Some colors comfort us, others excite us, some make us happy, and others make us sad. People are affected by color more

than they realize because color is tied to all aspects of our lives. Experts in colorgenics, the study of the language of color, believe that the colors we wear say a lot about us. Do you know why you select a shirt or dress of a certain color when you look through your clothes in

the morning？ Colorgenics experts say that we unconsciously choose to wear certain colors in order to communicate our desires, emotions, and needs.Colorgenics experts claim that our clothes send messages to others about our mood, personality, and desires. Pink expresses the peace and contentment of the wearer. People who often wear pink are supposed to be warm and understanding. The message is that you would like to share your peace and happiness with others. Red garments, on the other hand, indicate a high level of physical energy.

People who wear red like to take life at a fast pace. Brown is the color of wealth, and it shows a need for independence and material security. Wearers of green have a love of nature and enjoy peaceful moments. They often like to be left alone with their thoughts.

Although colorgenics may be a recent area of study, associating colors with emotions is not new. Colors have always been used to describe not only our feelings but also our physical health and attitudes. “Red with rage” describes anger; “in the pink” means to be in good

health; “feeling blue” is a sad way to feel; and “green with envy” indicates a jealous attitude.

In conclusion, the study of color can help us to understand ourselves and to improve our lives. It offers an alternative way to heal the body and spirit, and it can help us understand what others are trying to communicate.

46)Why are people affected by color more than they realize？

A . Colors make people more sensitive.

B . Colors bring people different feelings.

C . Colors are everywhere in people’s lives.

D . Colors give people excitement.

47)According to the passage, ________.

A . people wear different colors to show their feelings.

B . people communicate better when wearing their favorite colors.

C . people like to wear different colors in the morning.

D . people choose different colors without knowing they do it purposely.

48)Who want to share peace and happiness？

A . People who wear green clothes.

B . People who wear pink clothes.

C . People who need security and independence.

D . People who like to be left alone with their thoughts.

49)What is implied in the passage？

A . People started to associate colors with emotions long time ago.

B . How colors show emotions is a new research topic.

C . People wearing different colors usually feel happy.

D . The colors people choose affect their physical health.

50)How might learning about color be useful in our lives？

A . It helps us to express our ideas more clearly.

B . It helps us to control our emotions and desires.

C . It helps us to feel happier and more excited.

D . It helps us to understand ourselves and others.

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第9题

听力原文：M: Hi, Linda.W: Hi, James. What are you doing in the mall？ I thought you said you

听力原文：M: Hi, Linda.

W: Hi, James. What are you doing in the mall？ I thought you said you avoid these places.

M: Oh, I still do, but it's my roommate's birthday tomorrow and I am looking around to get him a present. He's not exactly the easiest person to find a present for.

W: Have you had any ideas of what to get？

M: Not really. I want to get him something he will be able to use instead of something he'lI just put into the closet.

W: That's true. I know often I get something from somebody I hardly ever use. And they stay in the closet or garage before they get thrown away.

M: I know. That's the problem. That's why I hate buying gifts for people because it can never be perfect.

W: Perhaps you are trying too hard to get something very impressive or decorative. I always think a gift should be practical.

M: Oh, I know. His bag is almost wrecked. Maybe I should get him a new one instead.

W: It sounds like a good gift.

M: Gosh, now I am wondering which color I should pick. He is really picky about the color.

W: That's not difficult. What was the last color he chose？ He obviously chose it for a reason.

(1)

A．In a shopping mall.

B．In the dormitory.

C．In the office.

D．In a library.

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What is color？ Why do some objects look red, others green, others blue？Color is caused by