题目列表(包括答案和解析)
Have you ever heard an echo of your voice?
An echo is a reflected(反射)sound. Stand in a very large, empty hall with nothing on the walls. Then shout. The sounds you make will hit the walls and come back to you. The walls reflect the sounds. These reflected sounds are called “echoes”.
We can use reflected sound to make sound travel farther. Hold a watch about fifty centimeters from your ear. You cannot hear it. The sound of the watch travels a short way in all directions. It does not travel as far as your ear. You can make it travel to your ear by using a roll of cardboard(纸板筒).
Make the roll of cardboard about fifty centimeters long. Put one end over your ear and hold the watch at the other. Now you can hear the watch because the sound has not gone in all directions. It is reflected down the roll to your ear.
A megaphone(喇叭筒)works in the same way. It makes sound travel farther. It reflects the sound into a beam which can travel a long way. In the ship, the sailor uses the megaphone to make his voice travel. Without the megaphone, his voice cannot travel far.
We use reflected sound in many ways. We use it to measure the depth of the sea, for example. Among the animals, bats and whales use reflected sound to tell them where they are and what things are near them.
【小题1】What is called “echo”?
| A．Very loud voices. |
| B．Very loud voices that are made by man. |
| C．Very loud voices that are made by animals. |
| D．The sound that is made by man or animals comes back from some place. |
| A．shout in a small room |
| B．shout in a large house full of things |
| C．shout in narrow valleys(山谷) |
| D．shout in the open air |
| A．c, b, a, d | B．c, a, b, d | C．d, c, b, a | D．d, b, c, a |
| A．reflected sound is useful only to blind people |
| B．people haven’t made use of reflected sound yet |
| C．bats use reflected sound to fly and get food |
| D．whales don’t use reflected sound as they live in the sea |
| A．a long piece of wood | B．a roll of cardboard |
| C．a thin thread | D．a long piece of silk |
When we talk about intelligence(智力)，we do not mean the ability to get good scores on certain kinds of tests or even the ability to do well in school．By intelligence we mean a way of living and behaving(表现)，especially in a new situation．If we want to test intelligence，we need to find out how a person acts instead of how much he knows what to do．
For example，when in a new situation，an intelligent person thinks about the situation，not about himself or what might happen to him．He tries to find out all be can，and then he acts immediately and tries to do something about it．He probably isn’t sure how it will all work out，but at least he tries．And if he cannot make things work out right，he doesn’t feel ashamed(羞愧)that he failed，he just tries to learn from his mistakes．An intelligent person，even if he is very young，has a special outlook(看法)on life，a special feeling about life，and how he fits into it．
If you look at children, you’ll see great different between what we call “bright” children and “non-bright” children. They are actually two different kinds of people, not just the some kind with different amount of intelligence. For example, the bright child really wants to find out about life-he tries to get in touch with everything around him. But the unintelligent child keeps more to himself and his own dream-world: he seems to have a wall between him and life in general.
【小题1】According to this passage, intelligence is the ability to _______.
| A．get some high scores on some tests |
| B．do well in school |
| C．deal with life |
| D．have a lot of book knowledge |
| A．knows more about what might happen to him |
| B．is sure of the result he will get |
| C．cares more about himself |
| D．keeps his mind on what to do about the situation |
| A．is always | B．is never |
| C．may not be | D．is hardly |
| A．try not to feel ashamed | B．learn from his mistakes |
| C．try to find all he could | D．make sure what result he would get |
| A．are two different types of children |
| B．are different mainly in their degree of cleverness |
| C．have difference only in their way of thinking |
| D．have different knowledge about the world |
Many children use the Internet to get useful knowledge and information, and to relax in their free time. But some of them are not using it in a good way. Here are some rules to make sure you are safe and have fun on the Internet.
Make rules for Internet use with your parents. For example, when you can go online, for how long and what activities you can do online.
Don’t give your password to anyone else, and never give out the following information: your real name ,home address, age, school, phone number or other personal information.
Check with your parents before giving out a credit card number.
Never send a photo of yourself to someone in e-mail unless your parents say it’s OK.
Check with your parents before going into a chat room. Different chat rooms have different rules and attract different kinds of people. You and your parents will want to make sure it’s a right place for you.
Never agree to meet someone you met on the Internet without your parent’s permission. Never meet anyone you met online alone.
Always remember that people online may not be who they say they are. Treat everyone online as if they were strangers.
If something you see or read online makes you uncomfortable, leave the site. Tell a parent or a teacher right away.
Treat other people as you’d like to be treated. Never use bad language.
Remember that not everything you read on the Internet is true.
【小题1】The writer tells children to_____________.
| A．send their own photos to him. |
| B．make rules for Internet use with parents. |
| C．believe everything they read on the Internet |
| D．give out their personal information |
| A．give password to others |
| B．get useful knowledge and information |
| C．give out a credit card number |
| D．go into a chat room as they’d like to |
| A．Using bad language. |
| B．Sending messages and e-mails. |
| C．Leaving the site if you feel uncomfortable. |
| D．Treating everyone online as strangers. |
| A．read anything on the Internet. |
| B．have a face-to-face meeting with anyone you met online. |
| C．relax in your free time |
| D．treat other people as you’d like to be treated. |
| A．How to use computers | B．Surfing on the Internet |
| C．Information on the Internet | D．Internet safety rules |
Many children use the Internet to get useful knowledge and information, and to relax in their free time. But some of them are not using in a good way. Here are some rules to make sure you are safe and have fun on the Internet.
Make rules for Internet use with your parents. For example, when you can go online, for how long and what activities you can go online.
Don’t give your password (密码) to anyone else, and never leak out the following information---your real name, home address, age, school, phone number or other personal information.
Check with your parents before giving out a credit (信用) card number.
Never send a photo of yourself to someone in e-mail unless your parents say it’s OK.
Check with your parents before going into a chat room. Different chat rooms have different rules and attract different kinds of people. You and your parents must make sure it’s a right place for you.
Never agree to meet someone you met on the Internet without your parent’s permission (允许). Never meet anyone you met on line alone.
Always remember that people online may not be who they say they are. Treat everyone online as strangers.
If something you see or read online makes you uncomfortable, leave the site. Tell a parent or teacher right away.
Treat other people as you’d like to be treated. Never use bad language.
Remember—not everything you read on the Internet is true.
1. If you want a true friend on the Internet , you can ____________ .
A. tell the people what your name is .
B. meet the people on line alone.
C. write an e-mail about yourself .
D. get your parent’s permission.
2.It’s good for children to ________ on the Internet.
A. give password to others
B. get useful knowledge and information
C. give out a credit card number
D. go into a chat room as they’d like to
3. The underlined phrase “leak out” in the third paragraph may mean “________.”
A. give away B. leave out
C. give out D. put away
4.If your parents don’t agree, never ________.
A. read anything on the Internet
B. relax in your free time
C. have a face-to face meeting with anyone you met online
D. treat other people as you’d like to be treated
5. This passage is mainly about “________”.
A. How to use Computers
B. Surfing on the Internet
C. Information on the Interne
D. Internet Safety Rules
Joe Read studied in this school for fourteen years. When he finished school, he was already eighteen years old. And then his father said to him, “You finished school, and you are a good student. Now you may go to town and get a good job. They need some clever people to work in the office. The people there can get a lot of money now. If you stay at home, you can’t get money from our family.” A few weeks later, Joe went to the office and asked for a job there. A man took him into a small room and gave him some questions on a piece of paper. Joe answered the questions quickly, and he gave the paper to the man. The man looked at the paper for a few minutes and then asked, “You were born on Sep. 23. But which year were you born in?” Joe answered, “Oh, every year.”
【小题1】 How old was Joe when he went to school?
| A．8. | B．18. | C．4. | D．14. |
| A．A school. | B．An office | C．A house. | D．A shop. |
| A．He was a good student. | B．He wasn’t a good student. |
| C．He wasn’t clever. | D．He could get money from his family. |
| A．Because he wanted to give Joe a job. |
| B．Because he wanted Joe to answer some questions. |
| C．Because he wanted to know if Joe was clever. |
| D．Because he wanted to know how old Joe was. |
| A．he didn’t want to work in the office |
| B．he was hardworking but dishonest |
| C．he was outgoing and clever |
| D．in fact, he didn’t really answer the man’s question |
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