We can have（）blue sky if we create（）less polluted world.

If someone asked you, “What color is the sky？” I expect that you would answer, “blue.” I am afraid that you would be wrong. The sky has no color. When we see blue, we are looking at blue sunlight. The sunlight is shining on little bits of dust in the air.

We know that there is air all around the world. We could not breathe without air. Airplanes could not fly without air. Thy need air to lift their wings. Airplanes cannot fly very high because as they go higher the air gets thinner. If we go far enough away from the earth, we find there is no air. What is the sky？ The sky is space. In this space there is nothing except the sun, the moon and all the stars. Scientists have always wanted to know more about the other worlds in the space. They have looked at them through telescopes and in this way they have found out a great deal. The moon is about 384,000 kilometers away from the earth. An airplane cannot fly to the moon but there is a thing that can fly even when there is no air. This is rocket.

I am sure that you are asking, “How does a rocket fly？” if you want to know, get a balloon and then blow it up until it is quite big. Do not tie up the neck of the balloon. Let go! The balloon will fly off through the air very quickly. The air inside the balloon tries to get out. It rushes out through the neck of the balloon and this pushes the balloon through the air. It does not need wings like an airplane. This is how a rocket works. It is not made of rubber like a balloon, of course. It is made of metal. The metal must not be heavy but it must be very strong. There is gas inside the rocket which is made very hot. When it rushes out of the end of the rocket, the rocket is pushed up into the air.

Rockets can fly fat out into space. Rockets with men inside them have already reached the moon. Several rockets, without men inside them, have been sent to other worlds much father away. One day rockets may be able to go anywhere in the space.

36. What color is the sky()？

A. It is blue .

B. It is white.

C. It is grey.

D. It has no color.

37. When an airplane flies too high()？

A. the air will be too thin to support its wings

B. the air will become thicker

C. the air will exert pressure on it

D. the air will disappear in no time

38. A rocket can fly to the moon because ().

A. it looks like a balloon

B. it is much lighter than an airplane

C. it doesn’t have wings

D. it works like an untied balloon

39. Which of the following statements about a rocket is NOT true()？

A. It can fly when there is no air.

B. It can fly without wings

C. It is made of strong metal

D. it is propelled by burning gas inside it.

40. A rocket is pushed up into the air when ().

A. hot gas rushes out of its head

B. it is powered by gas

C. hot gas rushes out of its bottom

D. hot gas rushes out of its neck.

heir eyes may help us to understand our feelings about color. If they can (1)_____ color differences, then perhaps we, too, are affected by (2)_____ unconsciously. Manufacturers have discovered by (3)_____ that sugar sells badly in green wrappings, (4)_____ blue foods are considered unpleasant, and the cosmetics should never be packaged (5)_____ brown. These discoveries have grown (6)_____ a whole discipline of color psychology that now finds (7)_____ in everything from fashion to interior decoration. Some of our (8)_____ are clearly psychological. Dark blue is the color of the night sky and (9)_____ associated with passivity and calm, while yellow is a day color with (10)_____ of energy and incentive. For primitive man, activity during the day (11)_____ hunting and attacking, while he soon saw as red, the color of blood and rage and the heat that came (12)_____ effort. And green is associated with passive (13)_____ and self preservation. Experiments have (14)_____ that green, partly bemuse of its physiological associations, also has a direct psychological (15)_____, it is a calming color. (16)_____ its exciting connotations, red was chosen as the signal for changer, (17)_____ closer analysis shows that a vivid yellow can produce a (18)_____ basic state of alertness and (19)_____, so fire engines and ambulances in some advanced communities are now (20)_____ around in bright yellow colors that stop the traffic dead.

A．see

B．reckon

C．distinguish

D．sense

ities with the highest, hest concentrations of centenarians in the world.

The people in the five regions in Europe, Latin America,Asia and the US that live to be 100 have a lot going for them. Genes probably play a small role, but these folks also have strong social ties ,tightly-knit families and lots of opportunities to exercise.

As we were examining the dietary secrets of the Blue Zones, as described in author Dan Buettner" s latest book, The Blue Zones Solution, we were struck by how essential tea drinking is in these regions. In fact, Buettner&39; s Blue Zones Beverage Rule--a kind of guideline summarized from his 15 or so years of studying these places--is:" Drink coffee for breakfast, tea in the afternoon, wine at 5 p. tm"

Science has plenty to say about the healthful virtues of green tea. Researchers are most enthusi- astic almt the components in green tea, as well as foods like cocoa. Why might they help so many Okina~vans in Japan break 1007 Some components in green tea can lower the risk of stroke,heart disease attd several cancers. One review study also found that drinking green tea can slightly improve metabolism (新陈代谢).

If you find yourself on the island of Ikaria, the Greek Blue Zone in the middle of the Aegean, you won&39;t be offered any tea made with tea leaves. Instead, Ikarians typically make their daily cup of tea with just one fresh herb that they have picked themselves that day--either rosemary, wild sage,oregano,nmrjotmn,mint or dandelion,all plants that may have anti-inflammatory (消炎的) properties, which may help lower blood pressure. This could explain Ikaria&39; s very low dementia (痴呆) rate,since high blood pressure is a risk factor for the disease.

52. What does the underlined word "centenarians" in Paragraph 1 refer to？

A.People who have secret lifestyles

B.People who enjoy physical exercise

C.People who are one hundred years old or older

D.People who carry the gene for being slim

What may the tea Ikarians drink daily help？A.To improve metabolism

B.To lower blood pressure

C.To lower life stress

D.To improve social relationships

According to Paragraph 3 ,what is the recommended time for tea drinking？A.In the morning

B.Any time of a day

C.In the early evening

D.In the afternoon

What might be the best title of the passage？A.Tea-Drinking Tips

B.Lifestyle Secrets of Ikarians

C.Tea-Drinking Ceremony in Okinawa

D.Blue Zones Solutions

请帮忙给出每个问题的正确答案和分析，谢谢！

We have ________ blue paint

A.no

B.not a

C.any

D.not

听力原文：M: Good morning! What can I do for you, Madam？

W: Good morning! I'm looking for a coat.

M: What color would you like？

W: Could you show me some？ I'd like a middle-sized red coat.

M: Sorry. We haven't anything in your size.

W: Do you have a smaller size？

M: I'm sorry. The small size coats have just been sold out. What about the blue one？ It looks nice and maybe fits you.

W: Well, may I try it on？

M: Yes, please.

W: It seems nice on me. How much is it？

M: 168 yuan.

W: OK. Here is 170 yuan, please.

M: Your change, please. Thanks.

W: You may keep the change. Good-bye.

M: Thank you ! Good-bye !

What was the woman going to buy？

A．A sweater.

B．A shirt.

C．A coat.

_______ from space, we can find that our earth looks like a“blue planet”.

A、Seen

B、Seeing

C、Having seen

D、To see

A.Can you show me the blueprint？

B.Can you show me the blue print？

e printed papers sold on streets.

These printed things look like newspaper but have hardly anything to do with them.You can only find reading materials badly(1) there----some are too strange for anyone to believe, (2)are frightening stories of something even worse, lowever.many of the young students are getting absorbed in such poisonous reading, which costs them what they should pay for their breakfast and bring them nightmares, and immoral ideas in return.Homework is left undone, daily game lost.

These sellers shout on streets selling their papers well.The writers, publishers and printers,(3) they are, we never know, are making their silent money.The sheep sk nd wolf's stories seem to have been forgotten once again

Why not forbid this kind of things at school？ Yes, both teachers and parents have ask each other for more strict control of the young readers.Yet unfortunately,(4)you want to forbid it, the money they want to have a look at it.Sometimes you may even find several children share one patched paper, which has travel led from one hand to another driven by the curious nature.

It really does harm to our society.It has already formed a sort of moral pollution.The (5)teachers and parents need more powerful support.Meanwhile, the young readers need interesting books to help them get rid of these ugly papers.(完型填空)

A.Others

B.Made up

C.Worried

D.Whoever

E.The more

section of the city. I told you yesterday that the city【58】larger than I thought it would be. Well, the business section is smaller than I thought it would be. I suppose that's【59】Washington is a special kind of city.【60】of the people in Washington work for the government.

About 9:30 we went to the White House. It's【61】the public from ten【62】twelve, and there was a long line of people【63】to get in. We didn't have to wait very long, because the line moved pretty quickly.

The White House is really white. It【64】every year. And it seems very white, because it's got beautiful lawns【65】around it, with many trees and shrubs. The grounds【66】about four square blocks. I mean, they' re about two blocks long【67】each side.

Of course, we didn't see the whole building. The part【68】the president lives and works can not be visited by the public. But the part we saw was beautiful. We went through five of the main rooms. One of【69】was the library, on the ground floor. On the next floor, there are three rooms named【70】the colors that are used in them: the Red Room, the Blue Room, and the Green Room. The walls are covered with silk【71】There are【72】old furniture, from the time【73】the White House was【74】built. And everywhere there are paintings and statues of former presidents and【75】famous people from history.

(56)

A．made

B．took

C．did

D．set