Scientists are very interested in the Universe，and they always want to know more about it. Years ago they knew many things about the moon. They knew how big it is and how far away it is from the earth. But they wanted to know more about it. They thought the best way was to send men to the moon. The moon is about 384,000 kilometers away from the earth. A plane cannot fly to the moon because the air reaches only 240 kilometers away from the earth. But something can fly even when there is no air. That is a rocket(火箭)
How does a rocket fly? There is gas（气体） in the rocket. When the gas is made very hot inside the rocket, it will rush out of the end of the rocket, so it can make the rocket fly up into the sky. Rockets can fly out into space. Rockets with men in them have been to the moon. Several rockets without men in them have flown to another planet(行星) much farther away than the moon. One day, rockets may be able to go to any place in space.
【小题1】Scientists knew ____________ the moon is.
A: how far    B: how big    C: how old    D: both A and B
【小题2】 The earth is about 384,000 kilometres away from the _____.
A: space    B: universe    C: sun   D: moon
【小题3】A plane cannot fly to the moon because ___________
A: there is no air above 240 kilometers away from the earth.
B: there is no gas in the plane
C: the plane is not strong enough
D: the plane can not fly a long way
【小题4】 The hot gas in the rocket is used for___________
A: keeping the air in the rocket fresh(新鲜的)
B: Keeping the men in the rocket warm
C: making the rocket fly up.
D: cooking food for the men
【小题5】 What is the writer’s attitude(态度) to the universe’s future.
A: Realistic(现实的)         B: Imaginative(幻想的)
C: Confident(有信心的)      D: Sad

Scientists are very interested in the Universe，and they always want to know more about it. Years ago they knew many things about the moon. They knew how big it is and how far away it is from the earth. But they wanted to know more about it. They thought the best way was to send men to the moon. The moon is about 384,000 kilometers away from the earth. A plane cannot fly to the moon because the air reaches only 240 kilometers away from the earth. But something can fly even when there is no air. That is a rocket(火箭)
How does a rocket fly? There is gas（气体） in the rocket. When the gas is made very hot inside the rocket, it will rush out of the end of the rocket, so it can make the rocket fly up into the sky. Rockets can fly out into space. Rockets with men in them have been to the moon. Several rockets without men in them have flown to another planet(行星) much farther away than the moon. One day, rockets may be able to go to any place in space.
【小题1】Scientists knew ____________ the moon is.
A: how far    B: how big    C: how old    D: both A and B
【小题2】The earth is about 384,000 kilometers away from the _____.
A: space    B: universe    C: sun   D: moon
【小题3】A plane cannot fly to the moon because ___________
A: there is no air above 240 kilometers away from the earth.
B: there is no gas in the plane
C: the plane is not strong enough
D: the plane can not fly a long way
【小题4】The hot gas in the rocket is used for___________
A: keeping the air in the rocket fresh(新鲜的)
B: Keeping the men in the rocket warm
C: making the rocket fly up.
D: cooking food for the men
【小题5】What is the writer’s attitude(态度) to the universe’s future.
A: Realistic(现实的)        B: Imaginative(幻想的)
C: Confident(有信心的)      D: Sad

Sheila bought a new lunch bag for school.

On the way to school, she looked inside. She hoped that a new lunch bag meant something new for lunch,   16   she found the same lunch as always---a sandwich.

When the lunch bell rang. Sheila found her bag and carried it to the dining hall. She opened it and   17   two pieces of fried chicken, several strawberries, and an egg.

“Wow!” Sheila said, “That’s what I call   18   !”

The next morning, Sheila opened her lunch bag and looked inside. Sure enough, she found another   19   . But when she opened the bag at lunchtime in the dining hall, she discovered a piece of pizza, an orange, and a cake.

“My lunch bag  20   be magic,” Sheila said.

“There’s no such thing as magic,” her friend Douglas  21   .

“There is,” Sheila said. “My mother   22   packs me a sandwich. But ever since I got this new lunch bag, the sandwich has changed into something I like.”

“Maybe your mother’s packing   23   things for a change.”

“No,” Sheila said. “I checked in the morning. The sandwich changes   24   .”

“You are not the   25   one with a magic lunch bag,” Beatrice said, turning around from the table behind her. “I have one, too. See? This is my magic bag.”

“Hey,” Sheila said. “My lunch bag really looks like yours.”

“Mine is magic,” said Beatrice. “Every day my dad  26   leftovers(剩饭), but at lunchtime I find a sandwich---my favorite!”

Sheila started   27   .

“What’s so funny?” Beatrice asked.

“That’s the sandwich my mother packs,” Sheila said. “We’ve been getting our lunch bags   28   up.”

Sheila and  29   shared their lunches every day after that. Sheila loved making new discoveries each time she opened her lunch bag. But her best discovery was magically finding a new   30   .

1.A. and             B. so                C. but              D. or

2.A. showed          B. discovered         C. wanted           D. offered

3.A. lunch bag         B. dining hall         C. breakfast         D. lunch

4.A. sandwich         B. chicken            C. egg             D. orange

5.A. can              B. must              C. may            D. need

6.A. disturbed         B. discovered          C. disappeared      D. disagreed

7.A. never            B. seldom             C. often           D. ever

8.A. different          B. same              C. easy            D. delicious

9.A. at home          B. during school         C. on the way       D. after lunchtime

10.A. last              B. next                C. extra            D. only

11.A. packs            B. cooks               C. leaves           D. checks

12.A. shouting          B. nodding             C. laughing         D. finding

13.A. fixed             B. used                C. broken          D. mixed

14.A. Douglas          B. Beatrice              C. Sheila’s mother   D. Beatrice’s father

15.A. friend            B. classroom            C. classmate        D. school

Scientists are very interested in the Universe，and they always want to know more about it. Years ago they knew many things about the moon. They knew how big it is and how far away it is from the earth. But they wanted to know more about it. They thought the best way was to send men to the moon. The moon is about 384,000 kilometers away from the earth. A plane cannot fly to the moon because the air reaches only 240 kilometers away from the earth. But something can fly even when there is no air. That is a rocket(火箭)

     How does a rocket fly? There is gas（气体） in the rocket. When the gas is made very hot inside the rocket, it will rush out of the end of the rocket, so it can make the rocket fly up into the sky. Rockets can fly out into space. Rockets with men in them have been to the moon. Several rockets without men in them have flown to another planet(行星) much farther away than the moon. One day, rockets may be able to go to any place in space.

1.Scientists knew ____________ the moon is.

     A: how far    B: how big    C: how old    D: both A and B

2.The earth is about 384,000 kilometers away from the _____.

    A: space    B: universe    C: sun   D: moon

3.A plane cannot fly to the moon because ___________

    A: there is no air above 240 kilometers away from the earth.

    B: there is no gas in the plane

    C: the plane is not strong enough

    D: the plane can not fly a long way

4.The hot gas in the rocket is used for___________

    A: keeping the air in the rocket fresh(新鲜的)

    B: Keeping the men in the rocket warm

    C: making the rocket fly up.

    D: cooking food for the men

5.What is the writer’s attitude(态度) to the universe’s future.

   A: Realistic(现实的)         B: Imaginative(幻想的)

   C: Confident(有信心的)      D: Sad

Thousands of years ago, people didn’t know that the Earth moved. They thought the sun really did move across the sky. The Greek god Helios was said to drive the sun around the sky with his chariot（战车）. But now, these ideas have all changed. Nowadays, it is the sun that drives our “chariot” around the sky.
So what does all this mean? Well, quite simply, there is now a plane （or “chariot”） that is powered by the sun. It has special parts in its wings. These parts absorb power from the sun. They absorb so much power that they can carry on flying at night. In the Greek myths（希腊神话）, Helios had to take a break at night. It seems we’re finally even more efficient than the gods themselves.
This plane is called Solar Impulse （“太阳驱动”号）. It will fly across the US in May. This is very important for the future of the world.
So why is solar energy so good for us? Well, other kinds of energy cause a few problems. If you live in China, you’ve probably noticed the pollution. This is caused by burning coal or gas to make energy. The heat and chemicals（化学制品）from this make things work. But if we use the heat from the sun, we don’t have to burn anything, and there’s no pollution.
Solar energy is not all there yet. It needs to be improved. But the best thing about it is that, unlike coal and gas, it doesn’t run out. Solar Impulse could keep flying forever. Well, actually, the sun will run out too, one day, but not for another 5 billion years. That’s a pretty long flight.
【小题1】What does “chariot” really refer to in the last sentence of Paragraph 1?