题目内容
Metal ________ make machines and many other things.
[ ]
A．used to
B．is used for
C．is used as
D．is used to
答案：D
解析：
解析：
|
点拨：金属被用来制作机器和许多其他的东西。 used to意为“过去常常”；be used for“被用来做”，但for后跟v. -ing；be used as意为“被用作”；be used to意为“被用来做”，其后跟动词原形，故选D。 |
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The population of the Earth is growing faster. It is important that we look after the Earth. We need it! The Earth gives us a lot of things. We also give the Earth a lot, but some of the things are not good.
In nature, when something dies, other animals and plants get food from it. Every animal or plant gives food for other animals or plants. However, animals can’t get food from many of the things that we ‘give’ the Earth. Animals and plants can’t eat metal, plastic and glass. These things will stay in the ground for many, many years.
Some rubbish is very dangerous for plants and animals. In some places, many animals live together. One animal makes food for many more animals. If we put rubbish and chemicals in the water, the plankton(浮游生物) can die. If there isn’t any plankton, many animals have nothing to eat.
So what can we do? Don’t leave any rubbish in the countryside! Don’t make so much rubbish!
【小题1】The Earth gives us ___________.
【小题2】When something dies in nature, _________.
【小题3】We must _______ to look after the Earth.
In nature, when something dies, other animals and plants get food from it. Every animal or plant gives food for other animals or plants. However, animals can’t get food from many of the things that we ‘give’ the Earth. Animals and plants can’t eat metal, plastic and glass. These things will stay in the ground for many, many years.
Some rubbish is very dangerous for plants and animals. In some places, many animals live together. One animal makes food for many more animals. If we put rubbish and chemicals in the water, the plankton(浮游生物) can die. If there isn’t any plankton, many animals have nothing to eat.
So what can we do? Don’t leave any rubbish in the countryside! Don’t make so much rubbish!
【小题1】The Earth gives us ___________.
| A．food | B．rubbish | C．chemicals | D．pollution |
| A．water and grass are polluted | B．plastic and wood become food |
| C．other animals and plants get food | D．metal and glass stay in the ground |
| A．put metal in the ground | B．use more wood |
| C．keep frogs in the water | D．make less rubbish |
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Mirrors have been used for thousands of years. The earliest were round pieces of shiny metal. Glass mirrors came late. The ancients thought that a mirror was magic. They did not understand how it worked. They thought they saw their spirits in a mirror and breaking a mirror brought bad luck.
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Fun houses use mirrors. They make people look funny. Some mirrors are curved to make people seem short and round or tall and tin They make people laugh at themselves.
【小题1】If you wave your right hand, you can see your In the mirror.
【小题2】Mirrors .
【小题3】Mirrors were magic in the past because .
【小题4】What does the word “curved” mean in Chinese?
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Fun houses use mirrors. They make people look funny. Some mirrors are curved to make people seem short and round or tall and tin They make people laugh at themselves.
【小题1】If you wave your right hand, you can see your In the mirror.
| A．left hand down | B．left hand wave |
| C．right hand wave | D．right hand up |
| A．appeared a long time ago |
| B．were made of glass at first |
| C．made of metal are popular today |
| D．had many uses in ancient times |
| A．people thought they could see their spirits in mirrors |
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| A．雕刻 | B．油漆 | C．扭转 | D．弯曲 |