题目内容
The cotton ________ are nicer, I think.
- A.one
- B.things
- C.some
- D.ones
Old styles are fashionable again, so one way is to buy second-hand clothes — recycled clothes. Another way is to buy' fair trade clothes. These clothes are either recycled or made in a ' way that protects the environment. They also protect the people who make the clothes.
Surprisingly, white cotton is one of the least environmentally-friendly crops of all. To protect the cotton, the growers use chemicals that pollute water, make farm workers ill and kill wildlife. New materials, such as hemp and bamboo, grow quickly and are more environmentally-friendly. These materials are very soft, and look fantastic. The best materials are coloured using natural dyes, made from plants.
Environmentally-friendly clothes are practical but until now they were often dull. Now fashion-designers are working with these materials and the clothes are beautiful as well. So now we can buy fashionable clothes that are also environmentally-friendly.
【小题1】Why do people often buy things they don't need? Because_.
| A．new things can be more comfortable |
| B．everyone wants to be fashionable |
| C．people are richer than before now |
| D．people care about the environment |
A. Recycled fashion. B. The problem with fashion.
C. Fashion doesn't have to pollute. D. New materials.
【小题3】Which of the following is more environmentally-friendly?
| A．Materials soft and looking fantastic. |
| B．Any materials coloured using natural dyes. |
| C．Hemp and bamboo. |
| D．White cotton. |
| A．people pay more attention to our environment |
| B．environmentally-friendly clothes are practical |
| C．all old styles become fashionable again |
| D．fashion-designers are working to make them beautiful |
| A．Cotton or Hemp and Bamboo? |
| B．Environmentally-friendly Clothes |
| C．Old Style, New Fashion Again |
| D．Fashion and the Environment |
Fashion isn’t very environmentally-friendly because it makes people buy things they don’t need, just because they’re new. We want to take care of the environment, we don’t want to pollute the air and we don’t want to waste energy and resources. But we also want to be fashionable. How can we buy fashionable clothes and protect the environment?
Old styles are fashionable again, so one way is to buy second-hand clothes — recycled clothes. Another way is to buy’ fair trade clothes. These clothes are either recycled or made in a ’ way that protects the environment. They also protect the people who make the clothes.
Surprisingly, white cotton is one of the least environmentally-friendly crops of all. To protect the cotton, the growers use chemicals that pollute water, make farm workers ill and kill wildlife. New materials, such as hemp and bamboo, grow quickly and are more environmentally-friendly. These materials are very soft, and look fantastic. The best materials are coloured using natural dyes, made from plants.
Environmentally-friendly clothes are practical but until now they were often dull. Now fashion-designers are working with these materials and the clothes are beautiful as well. So now we can buy fashionable clothes that are also environmentally-friendly.
【小题1】Why do people often buy things they don’t need? Because_.
| A．new things can be more comfortable |
| B．everyone wants to be fashionable |
| C．people are richer than before now |
| D．people care about the environment |
| A．Recycled fashion. | B．The problem with fashion. |
| C．Fashion doesn’t have to pollute. | D．New materials. |
| A．Materials soft and looking fantastic. |
| B．Any materials coloured using natural dyes. |
| C．Hemp and bamboo. |
| D．White cotton. |
| A．people pay more attention to our environment |
| B．environmentally-friendly clothes are practical |
| C．all old styles become fashionable again |
| D．fashion-designers are working to make them beautiful |
| A．Cotton or Hemp and Bamboo? |
| B．Environmentally-friendly Clothes |
| C．Old Style, New Fashion Again |
| D．Fashion and the Environment |
A Simple Scientific Experiment
| Below is a description of a single scientific experiment. It shows us how iron 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 ordinary water. Materials : 3 clean iron nails ( 铁钉) ; test tubes ; test tube holder ; cotton wool ; oil ; Bunsen burner. | |
| 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. 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. | (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. 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 ordinary water. Conclusion Iron rusts in ordinary water. (238 words) |
| A．keep the air dry | B．keep the tube wet |
| C．make the nails rust | D．keep the tube clean |
①Leave half a tube of water in it
②Boil the water for some time
③Put some clean iron nails in the tube
④Add some oil to the water
| A．①② | B．①③ | C．②③ | D．②④ |
| A．dry air | B．cotton wool | C．ordinary water | D．air-free water |
A Simple Scientific Experiment
|
Below is a description of a single scientific experiment. It shows us how iron 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 ordinary water. Materials : 3 clean iron nails ( 铁钉) ; test tubes ; test tube holder ; cotton wool ; oil ; Bunsen burner. |
|
|
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. 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. |
(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. 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 ordinary water. Conclusion Iron rusts in ordinary water. (238 words) |
1.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
2.What are necessary steps to make sure the water in the tube is air free?
①Leave half a tube of water in it
②Boil the water for some time
③Put some clean iron nails in the tube
④Add some oil to the water
A. ①② B. ①③ C. ②③ D. ②④
3.We can conclude from the experiment that only ____________ makes iron rusty.
A. dry air B. cotton wool C. ordinary water D. air-free water