Simple Scientific Experiment（实验）
| Below is a description of a single scientific experiment. It shows us how iron(铁) reacts (反应) with air and with water. Aim: To find out if iron rusts(生锈) (a) in dry air; (b) in water that has no air in it (air-free water) ; (c) in common water. Materials: Some clean iron nails(铁钉) ; test tubes(试管); test tube holder; cotton wool; oil; Bunsen burner. |
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| Iron in dry air Method (1) Put some iron nails at the bottom of a test tube. (2) Push some cotton wool down the tube. (3) Leave the tube for one week. Result After one week, the nails have not rusted. Conclusion Iron does not rust in dry air. |
(4) Add some oil to the water. (This will keep air out of the water.) (5) Leave the tube for one week. Result The nails do not rust in the tube with air-free water. Conclusion Iron does not rust in air-free water. |
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| Iron in ordinary water Method (1) Half –fill a test tube with water and add two or three clean nails. (2) Leave the tube for one week. Result The nails rust in the tube with common water. Conclusion Iron rusts in common water. |
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| Iron in air-free water Method (1) Half-fill a test tube with water. (2) Boil the water for three minutes. (This makes sure there is no air in the water.) (3) Put two or three clean nails in the water. |
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In the first part of the experiment the cotton wool is most probably used to _______.
| A．keep the air dry | B．keep the tube wet |
| C．make the nails rust | D．keep the tube clean |
What are necessary steps to make sure the water in the tube is air-free?
① Leave half a tube of water in it.
② Boil the water for some time.
③ Put some clean iron nails in the tube.
④ Add some oil to the water.
| A．①② | B．①③ | C．②③ | D．②④ |
We can know from the experiment that only _______ makes iron rusty.
| A．dry air | B．cotton wool | C．common water | D．air-free water |
Michael Jackson is one of the world’s best singers. Michael Jackson was born in the middle west of Gary, Indiana, in 1958. He began singing with his four brothers. They called the group “Jackson Five”. The group became very popular after appearing on a television progam. They started singing in 1965, became popular soon. In 1970 the group made their first record the name of “I Want You Back”. It was very popular. One of their hit records was “Never Say Goodbye”.
Michael was good at dancing as well as singing, for example, his dance moves and moon walking. He was asked to act in a film in 1978 for the first time, in the same year he made a record on his own, which sold eight million copies all over the world.
Michael nearly didn’t go out because he was too famous. Once his fans went off in a faint（晕倒） when they saw him at the concert. No one can do it by now. He lived in a large house and kept lots of animals. He never ate meat. He often raises money for charity. This made him win the Guinness World Records（吉尼斯世界纪录）in 2006. He died on June 25th, 2009, but he would live in our heart forever.What’s the name of their first record?
| A．“Never Say Goodbye” | B．“See You, See Me” |
| C．“I Want You Back” | D．“On the World” |
Michael was good at __________ according to the passage.
| A．rock music | B．street dance |
| C．playing the piano | D．moon walking |
Why did Mochael have to stay at home most of the time?
| A．Because he was too famous |
| B．Because he often felt lonely. |
| C．Because he had no friends |
| D．Because his company asked him to do so |
Dear Editor,(编辑)
I am unhappy these days.I am a student in Grade 3 of a middle school. I want to be a policewoman in the future.(未来) But my mother doesn’t like the job. She always says it is too dangerous for a girl to work as a policewoman. She thinks girls should work in the office. She hopes that I can work as a teacher. But I really dislike being a teacher. I don't like work with children. When I talk with her about it , she is often angry. She always thinks she is right. I don’t know what to do. Can you help me?
Yours,
LilyWhere does Lily want to work?
| A．in the hospital | B．At school | C．In the police station | D．In the office |
From the passage（文章），we know Lily is ______
| A．a worker | B．a student | C．a policewoman | D．a doctor |
Lily’s mother wants Lily to be a________.
| A．a nurse | B．a teacher | C．a clerk | D．a doctor |
Why doesn’t Lily’s mother like the job as a policewoman?
| A．Because it’s too busy. | B．Because it’s too difficult. |
| C．Because it’s too dangerous. | D．Because it’s too boring. |
Which of the following is TURE(正确的)?
| A．Lily’s mother is right |
| B．Lily thinks it’s terrible to be a policewoman. |
| C．Lily’s mother likes to talk with Lily about the job. |
| D．Lily needs the editor’s help. |
In many English homes people eat four meals a day. They have breakfast at any time from seven to nine in the morning. They eat porridge(粥) eggs or bread and drink tea or coffee at breakfast. Lunch comes at one o’clock. Afternoon tea is from four to five in the afternoon and dinner is about half past seven. First they have soup, then they have meat or fish with vegetables. After they eat some other things, like bananas, apples or oranges. But not all English people eat like that. Some of them have their dinner in the middle of the day. Their meals are breakfast, dinner, tea and supper and all these meals are very simple.Many English people have ______ meals a day.
| A．two | B．three | C．four | D．five |
People may have _______ for their breakfast according to the passage.
| A．tea and eggs | B．hamburgers and tea |
| C．coffee and salad | D．eggs and fish |
People have lunch at _______.
| A．any time | B．nine | C．five | D．one |
People don’t have _______ for their dinner.
| A．bananas and apples | B．soup and meat | C．meat and fish | D．porridge |
Most Englishmen have dinner ________.
| A．at one | B．at any time | C．at noon | D．in the evening |
Tony and Anna are brother and sister. They are Americans. Tony likes sports very much. He can play soccer, basketball and volleyball. Anna likes music(音乐) very much. She can't play ball games. But they both(两者都) like playing on computers.
They like eggs, bread and milk for breakfast. For lunch, Anna likes eating vegetables and fruit, but Tony likes chicken and fish(鱼). They both like hamburgers. But they don' like ice cream or dessert.
根据短文内容，选择最佳答案。(10分)Anna is Tony’s _____ and they are _____.
| A．sister; Chinese | B．sister; Americans |
| C．friend; Americans | D．Friends; Chinese |
Tony likes ______ and he can play ______.
| A．sports; tennis | B．music; basketball |
| C．sports; volleyball | D．music; tennis |
Tony and Anna both like _____.
| A．vegetables | B．soccer | C．playing on computers | D．music |
For breakfast, they like _____.
| A．eggs, bread and milk | B．vegetables and fruit |
| C．chicken and fish | D．chicken and milk |
They don’t like _____ or _____.
| A．ice cream; vegetables | B．ice cream; dessert |
| C．hamburgers; dessert | D．Fish ; ice cream |
Miss Li is a teacher. She teaches in a middle school. She gets up at half past five in the morning. She has breakfast at 6:00.After that she goes to school by bike. She gets there very early. She cleans her desks and chairs for other teachers. Classes begin at 8:00.She and the other teachers work hard. She goes home at 4:00 in the afternoon. Then she does some housework .After dinner she reads books and goes over the students’ homework. She goes to bed at about ten.Miss Li works _______
| A．in a shop | B．in a middle school | C．on farm | D．in a factory ' |
She get up at _______ in the morning..
| A．5:l0 | B．5:20 | C．5:30 | D．5:45 |
She goes to work_______.
A .late B at night C. earlyD. on footShe does some housework ______
| A．at 4:30 | B．before 4:40 | C．after 4:00 | D．in the morning |
After supper she ____.
| A．reads books | B．goes over the students' homework |
| C．both A and B | D．watches TV |