When you look up into the sky at night, have you ever felt that your eyes are playing tricks on (捉弄) you? It seems that the stars are moving all the time.
Actually, there is nothing wrong with your eyes. This twinkling effect is called scintillation (交光). Scintillation happens because of air movements in the earth’s atmosphere (大气). Light is “bent (弯曲的)” when it travels through different parts of the earth’s atmosphere. As the air in the earth’s atmosphere is moving all the time, the light from the stars looks as if it is moving too.
The same thing also happens to things on the ground. On a very hot and shiny day, if you look at the road, the image in the distance is not clear and things move slightly. You can also see the same effect if you drop a rock into water. The rock appears a little unclear under the moving water.
This twinkling effect causes a lot of problems for astronomers (天文学家) since they cannot observe the stars clearly. A telescope (望远镜) was sent into space so that the air movements in the atmosphere could be avoided (避免). It took a long time to build the space telescope but finally in 1990, a huge space telescope called the Hubble Space Telescope was successfully sent into space. Since then, astronomers have many important observations that have helped people understand space better.
根据短文内容，选择最佳选项。 （10分）
【小题1】What happens to the light from the stars we see when the air in the earth’s atmosphere is moving?

Jack is the name of a game. It is quite popular with children. To play jacks, you will need a small ball and ten small metal objects (物体) called jacks.

  The rules for this game are quite easy. To begin with, put the ten jacks on the floor or ground in front of you. Toss the ball high, pick up one jack and then catch the ball. Keep the jack in your hand and go on to pick up the other jack one at a time. You lose your turn if you do not catch the ball, or if you do not pick up a jack, or if you drop (掉) any of the jacks from your hand.

  When you finish all the ten jacks, you now try to do the same thing again but with two jacks at one time. This is more difficult, of course. You lose your turn if you make any of the above three mistakes (错误) or if you do not pick up two jacks each time.

1.To play jacks is ___________.

A. difficult for boys     B. interesting for children

C. difficult for girls      D. interesting for old people

2.The word “toss” here means __________.

A. drop    B. catch   C. throw    D. pick

3.If you want to finish the first and second parts of the game, you have to pick up jacks __________.

A. ten times  B. fifteen times  C. twenty times  D. thirty times

4.The jacks are made of _________.

A. paper    B. glass     C. metal     D. water

5.After you pick up the first ten jacks, the game becomes more difficult because you must pick up _________ at a time.

A. two jacks  B. four jacks   C. three jacks   D. only one

任务型读写

Think of life as a game in which you are playing with five balls in the air. You name them work, family, health, friends and spirit (精神) and you keep all of them in the air. You will soon understand that work is a rubber ball. If you drop it, it will bounce (弹跳) back.

But the other four balls, family, health, friends and spirit, are made of glass. If you drop one of these, they will be broken. They will never be the same. You must understand that and try to have balance in your life. How?

Don't look down on your worth by comparing yourself with others. It is because we are different and each of us is special.

Don't let other people set goals for you. Only know what is best for yourself.

Don't give up when you still have something to give. (3)Nothing is really over until the moment you stop trying.

Don't be afraid to fight difficulties. It is by taking chances that we learn how to be brave.

Don't shut love out of your life by saying it's impossible. (4) The quickest way to receive love is to give it; the fastest way to lose love is to hold it too tightly (紧紧地) ; the best way tokeep love is to give it wings.

Don't run through life so fast that you forget not only where you've been, but also where you are going.

Don't be afraid to learn. Knowledge is weightless. It's a treasure (珍宝) you can always carry easily.

Don't use time or words carelessly. You can't get them back.

Life is not a competition, but a trip, step by step.

Yesterday is history, tomorrow is a mystery (秘密), and today is a gift: that's why we call it “he present”.

A)根据短文内容简要回答问题。

1. What are the five balls of life?

2. Please say something about knowledge according to the passage·

B)将短文中画线的两个句子译成汉语。

3._____________________

4. ____________________

C)请给短文拟一个适当的标题。

5. ____________________

Singapore: A Fine City

Singapore welcomes tourists. When you come to visit Singapore, please keep the laws of this country. Here are some points that you must remember.

?? SMOKING: Cigarette smoking is a danger to health. It is not allowed in lifts, cinemas, theaters, all government offices and on buses. If you break it, you have to pay fines of up to $ 1,000.?? LITTER: Singapore is the Garden City of Asia---clean and green. Dropping litter in public places is not allowed. You can be fined up to $ 500 for dropping litter ---even if it only a piece of waste paper or a cigarette end.

?? EATING OR DRINKING: In Singapore, when you take a subway or a bus, you are not supposed to eat or drink anything, or you'll be fined up to $ 500.

? RIDING: When you ride a bike across an underpass(地下通道), please push your bike across the underpass, or you have to pay $ 1,000 for riding your bike.

?? JAYWALKING*: You must always use the pedestrian(步行者, 徒步的)crossing. You can be fined $ 50 for crossing the street less than 50 meters from a crossing. These laws are also for children who are old enough to be in the street on their own.

1.The underlined word "fine" in the passage means ________.

A. 好????????????? ????????????? ????????????? B. 罚款????????????? ????????????? ????????????? C. 晴朗????????????? ????????????? ????????????? D. 健康

2.When you come to visit Singapore，you should remember to ___________.

A. go shopping?????? ????????????? ????????????? ????????????? ????????????? B. keep the law of this country

C. go sightseeing???? ????????????? ????????????? ????????????? ????????????? D. visit some fantastic sights

3.Singapore is a city with _________ according to the passage.

A. cigarettes? ????????????? B. green plants????????????? C. litter???? ????????????? ????????????? D. bikes

4.What will happen if you drop a piece of waste paper in Singapore?

A. You have to pick it up.?????????? ?????????????

B. You have to sweep the street.

C. You will be fined up to$500? ????????????? ????????????? ??

D. You will be told not to do it again.

Think of life as a game in which you are playing with five balls in the air. You name them work, family, health, friends and spirit and you keep all of them in the air. You will soon understand that work is a rubber ball. If you drop it, it will bounce (弹跳) back.
But the other four balls, family, health, friends and spirit, are made of glass. If you drop one of these, they will be broken. They will never be the same. You must understand that and try to have balance in your life. How?
Don’t look down on your worth by comparing yourself with others. It is because we are different and each of us is special.
Don’t let other people set goals for you. Only you know what is best for yourself.
Don’t give up when you still have something to give. Nothing is really over until the moment you stop trying.
Don’t be afraid of difficulties. It is by taking chances that we learn how to be brave.
Don’t shut love out of your life by saying it’s impossible. The quickest way to receive love is to give it; the fastest way to lose love is to hold it too tightly; the best way to keep love is to give it wings.
Don’t run through life so fast that you forget not only where you’ve been, but also where you are going.
Don’t be afraid to learn. Knowledge is a treasure you can always carry easily.
Don’t use time or words carelessly. You can’t get them back. Yesterday is history, tomorrow is a mystery, and today is a gift; that’s why we call it “the present” Life is not a competition, but a trip, step by step.
【小题1】The passage tells us not to _________ because everyone is special.