题目内容
Another headache _____ her another difficult question to me!
A. set B. made up C. asked D. put
D
本句中put ... to为常用搭配。
天天向上一本好卷系列答案
小学生10分钟应用题系列答案Since people first sent rockets into space in the 1950s, we have been leaving behind all sorts of things. Some of them, like the camera, were lost by astronauts while they did work outside their spaceship. But much of the space junk is made up of little pieces of things that were once bigger objects, until they struck each other and broke apart.
Some things we send into space fall back toward the earth and burn up in the atmosphere. But larger pieces sometimes survive the extreme heat and hit the ground or the ocean at great speeds. So there is always concern that something may fall from the sky and do some harm.
But space junk falling on housetops (屋顶) is not the biggest worry. Scientists are concerned about what happens when an empty rocket strikes another while orbiting (绕轨道飞行) the earth. Two big things become many smaller things. They then hit other things. The pieces get smaller and smaller until they form a cloud of junk that blocks the path of future space vehicles.
So what can be done to clean up the space around our planet? Marco Castronuovo, an Italian researcher, talks about sending a satellite into space that would get very close to some of the larger pieces of space junk. The satellite would connect a small rocket to the useless object. When the rocket explodes, it pushes the junk into a lower and slower orbit, nearer the earth. After a time, the junk burns up in the atmosphere.
Mr. Castronuovo has proposed (提议) using a number of small satellites with robotic arms. One arm would catch the space junk, and another arm would connect the rocket. He imagines that each satellite would jump from one large piece of junk to another. He thinks this method could destroy about ten large objects each year.
Scientists have been concerned about space junk for many years. Right now, the costs of the clean-up have been too great. Mr. Castronuovo says his system could be put in place for a much more reasonable amount of money.
【小题1】Much of the space junk _____.
| A．was thrown by the astronauts |
| B．is from broken spaceship |
| C．is made up of small pieces of things |
| D．returns to the earth piece by piece |
| A．will stop the future space vehicles |
| B．will do harm to the atmosphere |
| C．will fall on the housetops |
| D．will burn up in space |
| A．It can remove space junk completely. |
| B．It can save a large amount of money. |
| C．It can create a large amount of space. |
| D．It can develop robotic technology. |
When Ben Franklin was only a boy, he always wanted to know about things. He was always asking his father and brothers “What?” and “How?” and “Why?”
They couldn’t always tell him what he wanted to know.
When they couldn’t tell him, Ben tried to find out for himself.
Many times Ben did find out things that no one knew before. The other boys would say, “That Ben Franklin! He’s always finding out something new!”
Ben lived close to the water. He liked to go there to see the boats. He saw how the wind blew them across the water.
One day Ben said to himself, “Why can’t the wind help me float across the water? And I’m going to try.” Ben got his big kite. He took hold of the kite string and ran with it. The wind took the kite up into the air. Then Ben jumped into the water.
The wind blew the kite high into the air. Ben began to float across the water. Soon he was on the other side, and he had not worked at all.
One boy shouted, “Look at Ben floating across the water! His kite takes him to the other side without any work!”
“Yes,” said another. “He’s always finding new ways to do things.”
1.When he was only a child, Ben .
|
A．liked to fly a kite by himself |
B．always asked easy questions |
|
C．always liked to play with water |
D．always liked to find out how things worked |
2. His father and brothers .
|
A．couldn’t answer all his questions |
B．could answer all his questions |
|
C．tried hard to find out something new for him |
|
|
D．were too busy to answer his questions |
3.How did Ben Franklin float across the water?
|
A．The other boy took him across it. |
B．The water carried him across it. |
|
C．The flying kite took him across it. |
D．A boat took him across it. |
4.He found out many things that .
|
A．children didn’t know |
B．his father and brothers knew |
|
C．people didn’t know |
D．most people knew |