A recent survey of 2000 parents in Britain showed that they are often afraid of science questions asked by their curious children only because they have no idea what the answer is. Here is a list of some simple questions that you can ask your parents to see if they know the answers.

    Q: Why is the sky blue?

    A: You probably know white sunlight is made up of seven colors. While it moves in a straight line when going through space, it starts to divide as it hits “raised area” in the atmosphere. The ones with longest wavelengths pass through easily. The blue , however , can be taken in by the gas molecules (分子) because it has a shorter wavelength , which in turn scatters (使分散) it in different directions. That’s why when you look up at the sky, it appears to be blue.

    Q:Why does the moon sometimes appear during the daytime?

    A: The simple answer to that is because just like any other object it is being lit by the sun. As long as it is around 45 degrees or even 90 degrees off the sun, it will receive light and be able to be seen. The only time it is not able to be seen during its 28-day orbit (轨道) around the earth is when it is right between the earth and the sun. That’s because its back , which is not lit by the sun, is facing us.

    Q: Where do birds/ honeybees go in winter?

    A: While the bird part is quite easy, since a lot of them get together and travel, the honeybee part is likely to puzzle your parents. It turns out that these busy insects stop being that active when the temperature drops below 50°F. Instead ,they get together in the lower central area of the hive （蜂巢）and form a ball around their queen. This helps keep both warm enough to survive the cold winter months.

1.The sky looks blue mainly because the color blue in the sunlight_______.

A. has the longest wavelength among all the colors

B. cannot be taken in by the gas molecules

C. doesn’t hit “raised area” in the atmosphere

D. cannot pass through space successfully

2.How long can’t the moon be seen during the daytime in a month?

A. 2                             B. 28                           C.30                                      D. 31

3.What do honeybees choose to do when the temperature drops below 50°F?

A. They choose to be active in the wild.

B. They choose to keep themselves warm.

C. They choose to travel to a warm place.

D. They choose to get together in the upper central area of the hive.

4.What is NOT explained in the passage?

A. Why is the sky blue?

B. Why is the moon able to be seen during the daytime?

C. Why do birds travel in winter?

D. Where do honeybees go in winter?

 

Disasters happen all the time somewhere in the world. Are you ready if one hits your neighborhood next week? Find out what you need to do now before it is too late. Let’s take an earthquake for example.
During an earthquake, get under a strong object like the kitchen table. Don’t leave the building during the shaking, or you might be hurt by falling objects from the outside of the building.
When you are in bed during the night and an earthquake happens，simply roll off the bed. There will be a safe void around the bed.
If you are watching TV and you cannot easily run away by getting out through the door or window, then lie down and curl up(蜷伏) next to a sofa, or a large chair.
Never go to the stairs. The stairs are likely part of the building to be broken. Even if the stairs are not destroyed by the earthquake，they may fall down later when people run down.
Try to get into an open area away from trees，buildings，walls，advertisement boards and power lines if you are outdoors.
If you are driving when an earthquake suddenly happens，just stay in your car until the shaking ends. However, if the footbridge falls and breaks your car，get out of it and sit or lie next to it. All the broken cars have voids 3 feet high next to it.
【小题1】 What should you do if you are in a building when an earthquake happens?

A．Rush out quickly	B．Sit in the kitchen
C．Stay below strong objects	D．Go down the stairs

【小题2】The underlined word “void” in Paragraph 3 means“_______”.

A．space

B．seat

C．distance

D．sign

【小题3】 When you are outdoors during an earthquake，you should go to _______.

【小题4】 If you are inside a car when there is a sudden earthquake，you should _______.

A．get out of it

B．keep inside it

C．move away fast

D．stay under the footbridge

Last week, 169 Junior 1 students at No. 35 Middle School of Shenyang took their first no-teacher exam. After the teacher handed out the exam paper, he left the room and never came back. A student collected in the papers when the exam ended.
“That test was not only a test of knowledge, but also a test of moral(道德). We wanted to show students how important honesty is, ”said Cai Wenguo, the school’s headmaster. The school says no cheating (作弊)happened in the test. Next year, it wants 80％ of its exams to be without teachers. But students have different ideas.
“I was happy and excited during the exam because my teachers trusted me, ”said Lang Yudan, a 13-year-old girl in Class 11.
“Schools must trust students a lot not to use invigilators（监考人）. But I think it is too early. Some students will cheat if there are no invigilators. And the students will not be able to ask for help when needed. ”said Hua Sha.
“I don’t like having invigilators in exams. When they walk around the classroom, they make me nervous. I would get higher marks without them in the room because I would feel more relaxed. ”Liu Qingxi said.
“I think it’s very important to have invigilators in exams. Many students want to check their answers with each other after they have finished papers. And they can also keep the classroom in order when something unusual happens. They may make me nervous, but I still think we need them. ” Shangguan Yuan said.
Not using invigilators may be a good idea. But before using it, schools must tell students the importance of honesty and try to find ways to solve something unusual in exams.
【小题1】The passage mainly talks about ______.

A．how to pass an exam

B．how to make students honest

C．whether there is cheating in exams

D．whether invigilators are needed in exams

【小题2】No. 35 Middle School of Shenyang held a no-teacher exam to _______.

A．let the students have a good rest

B．teach the students in a better way

C．help all the students pass the exam

D．find whether the students were honest

【小题3】From what the students have said, we know ________.

A．invigilators really help them a lot

B．all of them think it is a good idea

C．something unusual never happens in exams

D．not all of them agree with the head

【小题4】In the sentence “And they can also keep the classroom in order when something unusual happens”“they”refers to _________.

A．students

B．headmasters

C．invigilators

D．schools

You can’t see any object unless light from that object gets into your eyes．Some of the things you see give off light of their own。The sun，the stars，a lighted lamp are the examples that can be seen by their own light．But most of the things you see are not giving off light of their own．They are just reflecting(反射)light that falls on them from the sun or some other luminous bodies．The moon，for example，doesn’t give off any light of its own．It is not 1uminous．You see it because sunlight falls on it and some of the sunlight reflects on the earth．So moonlight is only second—hand sunlight．
When you look at a book，it sends some of the light which fails on it to your eyes，and you see the book．If light could be kept out from where you’re so that there would be no light from the book to reflect．Then you couldn’t see the book even with your eyes wide open．Light travels so fast that the time in which it travels from the book you’re reading to your eyes is as short as if there were no time at time．Light reaches us from the moon，which is about 380，000 kilometres away，in only a little more than a second．
【小题1】You can see the book because________．

A．your eyes are close to it	B．it reflects some of the light
C．it has light of its own	D．it is big enough to be seen

【小题2】The Chinese meaning of the world“luminous”is close to_______．

A．闪光的

B．看不见的

C．发光的

D．明亮的

【小题3】________has light of its own．

A．The moon

B．The earth

C．The sun

D．The satellite of Dong Fong Hong

【小题4】Light travels about_________kilometers per second．

A．300，000

B．100，000

C．400，000

D．190，000

【小题5】Which of the following is TRUE?

A．All the things you can see give off light．

B．Light from the book is much faster than that from the moon．

C．The moment you open your eyes，the light from the book travels to your eyes．

D．Light travels so fast that there is no time for you to read．

完形填空 先通读下面的短文，掌握其大意，然后在每小题所给的四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。（本大题共10分，每小题1分）
One day a father of a very rich family took his son on a trip to the country with in order to show his son how poor people   16  be. They spent a couple of days and nights on the farm of    17   would be considered a very poor family.
On their return from their trip, the father asked his son, "How was the trip?" "It was great, Dad. We have a pool that reaches to the middle of our garden and they have a creek（小溪）that has no    18 . We have imported lanterns in our garden and they have the   19  at night. Our patio（院子）reaches to the front yard and they have the   20  horizon（地平线）. We have a small piece of land to live on and they have fields that go   21  our sight. We buy our food, but they grow   22 ."
With this the boy's father was speechless (无语的) .
Then his son added , "Thank dad for showing me how    23  we are."
Too many times we forget what we have and concentrate on（集中注意力）what we don't have. What is one person's worthless object is another's prize possession (财富). It is all  24   
on one's opinion. Make you wonder what would happen if we all gave thanks for all the bounty（恩赐）we have,   25   worrying about wanting more . Take joy in all you have.
【小题1】  

A．must

B．can

C．should

D．need

【小题2】

A．how B．which C．what D．that

【小题3】

A．beginning B．way C．end D．water

【小题4】  

A．dark

B．darkness

C．stars

D．day

【小题5】  

A．beautiful

B．full

C．longer

D．whole

【小题6】

A．beyond B．in C．out D．straight

【小题7】

A．ours B．them C．theirs D．themselves

【小题8】  

A．poor

B．rich

C．lucky

D．happy

【小题9】  

A．basing

B．to base

C．bases

D．based

【小题10】  

A．instead

B．instead of

C．more than

D．less than