Our earth is in trouble.  Our drinking water is becoming dirtier, and the air is not as clean as before.  People and factories are polluting the air, rivers and lakes and seas.  You may think that there is mothing you can do to help.  That’s not true.  There are many things you can do to help the earth.

Cars burn gasoline.  This will produce a lot of CO₂ into the air.  Some people believe that too much CO₂ is making the earth warmer than ever.  They think CO₂ thins the clouds above us.  The clouds keep us away from the strongest sunlight.  So try to walk, ride a bike or take a bus.  And if you drive a car, drive at a steady speed.  This can save some gasoline.

The biggest energy use at home is for keeping warm and cool.  So turn the air conditioner off when you don’t need to use it.  Use lights that save energy.

Use fewer things that cannot be used again.  When you buy something, consider those made from things that can be used again first.

（1）要用大量的水来洗澡沐浴。In one week an American family uses as much water for showers as a person drinks in three years! Buy a waterworks that uses less water, or take shorter showers.  This can cut the use of water.

1.将（1）处译成英语。

_______________________________________________________________________________

2.找出 If there is too much CO₂ in the air, the earth will become warmer 的同义句。

_______________________________________________________________________________

3.从文中找出能概括本文大意的句子。

_______________________________________________________________________________

Our earth is in trouble.  Our drinking water is becoming dirtier, and the air is not as clean as before.  People and factories are polluting the air, rivers and lakes and seas.  You may think that there is mothing you can do to help.  That’s not true.  There are many things you can do to help the earth.
Cars burn gasoline.  This will produce a lot of CO₂ into the air.  Some people believe that too much CO₂ is making the earth warmer than ever.  They think CO₂ thins the clouds above us.  The clouds keep us away from the strongest sunlight.  So try to walk, ride a bike or take a bus.  And if you drive a car, drive at a steady speed.  This can save some gasoline.
The biggest energy use at home is for keeping warm and cool.  So turn the air conditioner off when you don’t need to use it.  Use lights that save energy.
Use fewer things that cannot be used again.  When you buy something, consider those made from things that can be used again first.
（1）要用大量的水来洗澡沐浴。In one week an American family uses as much water for showers as a person drinks in three years! Buy a waterworks that uses less water, or take shorter showers.  This can cut the use of water.
【小题1】将（1）处译成英语。
_______________________________________________________________________________
【小题2】找出 If there is too much CO₂ in the air, the earth will become warmer 的同义句。
_______________________________________________________________________________
【小题3】从文中找出能概括本文大意的句子。
_______________________________________________________________________________

Our earth is in trouble. Our drinking water is becoming dirtier, and the air is not as clean as before . People and factories are polluting the air, rivers and lakes and seas. You may think that there is nothing you can do to help. That’s not true. There are many things you can do to help the earth.

Cars burn gasoline. This will produce a lot of CO₂ into the air. Some people believe that too much CO₂ is making the earth warm than ever. (2) They think CO₂ thins the clouds above us. The clouds keep us away from the strongest sunlight. So try to walk, ride a bike or take a bus. And if you drive a car, drive at a steady speed. This can save some gasoline.

The biggest energy use at home is for keeping (1)_________ or______ .So turn the air conditioner off when you don’t need to use it. Use lights that save energy.

Use fewer things that cannot be used again. When you buy something , consider those made from things that can be used again first.

(3)要用大量的水来洗澡沐浴。In one week an American family uses as much water for showers as a person drinks in three years! Buy a waterworks that uses less water, or take shorter showers. This can cut the use of water.

1.在横线上填入适当的单词_____________ _____________

2.将句子(2)译成汉______________________________________________________

3.将句子(3)译成英______________________________________________________

4.找出 If there is too much CO2 in the air, the earth will become warmer的同意义句

_________________________________________________________________

5.从文中找出能概括本文大意的句子______________________________________。

Our earth is in trouble. Our drinking water is becoming dirtier, and the air is not as clear as before. People and factories are polluting the air, rivers, lakes and seas. You might think there is nothing you can do to help. That’s not true. There are many things you can do to help the earth.

Cars burn gasoline. This will produce a lot of CO into the air. Some people believe that CO is making the earth warmer. They think CO thins the clouds above us. The clouds keep us away from the strongest sunlight. So try to walk, ride a bicycle or take a bus. And if you drive a car, drive at a steady speed. This can save some gasoline.

The biggest energy use at home is for keeping warm or coo1.So turn the air conditioner off when you don’t need to use it. Use lights that save energy.

Use fewer things that cannot be used again. When you buy something, consider those made from things that can be used again first.

A lot of water is needed for a shower. In one week an American family uses as much water for showers as a person drinks in three years! Buy a waterworks that uses less water, or take shorter showers. This can cut the use of water.

1. The writer thinks that we can do_________ for the earth.

  A. something        B. nothing         C. little             D. few things

2. If there is too much CO in the air, the earth will become _________.

  A. 1arger           B. warmer         C. more colourful      D. colder

3. The underlined word “thin” here means _______in Chinese.

  A. 稀薄的         B. 使……变稀薄   C. 瘦的              D. 使……变瘦

4. We use the most energy at home for____.

  A. washing clothes                   B. having showers

  C. keeping quiet                     D. keeping warm or cold

5. The writer suggests ________to save water.

  A. using milk to have a bath            B. showering once a week

  C. spending less time showering         D. using a big waterworks

Why do plants grow in some places and not in others? Why does some land have so much growing on it, while other land has almost no plants growing on it at all?
To grow, plants need several things. One is warmth. In very cold places almost nothing grows. Plants also need water. In very dry parts of the Earth only a few unusual plants can grow. That’s why dry deserts everywhere are almost not covered by trees or grass.
Plants must also have a place in which to put down their roots and grow. They find it difficult to grow on hard land. The town is built on hard land. The plants here have only the soil (土壤)found between the cracks of the stones to grow in.
Another thing plants must have before they can grow is food.
What will happen if we try to make things grow on the sandy beach? A few plants, such as beach grass, will grow in sand, but most plants won’t. Even if the weather is warm enough and we water the plants each day. Many of them will die because the sand on this beach has almost no food for plants.
【小题1】According to the passage, plants need _____ things to grow well.