题目内容
任务型阅读
下面文章中有5处(第1－5题)需要添加小标题。请从以下选项中选出符合各段意思的小标题。
Have you ever rubbed(擦)your hands together when they get cold? Why do we do that? We do that for friction(摩擦)．Friction happens when two things that aren't very smooth rub together to make heat energy．The faster you rub two things together, the more friction(and heat)you can make．Let's discover friction!
● 1
Soap Water Your hands
● 2
(1)Make sure your hands are dry．
(2)Rub your hands together until you feel the heat of your hands．
(3)Now, use soap and water to get your hands very slippery(滑的)．
(4)Try to make friction happen while your hands are slippery．
(5)Please write down what has happened．
● 3 Friction is an energy that happens when two things rub together．When friction happens, it makes heat! When your hands are slippery, they won't make very much friction and your hands won't get so hot．
● 4
(1)Friction happens when you stop your fast running bike．
(2)Ancient people made fire by rubbing two pieces of wood together．Friction happened though they didn't know it．
● 5
Friction is everywhere．Have you ever noticed situations where friction is happening? If not, ask your parents to take you out in a car．If it is not too hot, touch the tires(轮胎)of the car before and after a short drive to see how much warmer they get from friction．
Why do we need to throw less away? There are two reasons. One is that some resources（资源）are nonrenewable（不可再生的）. That means there is only a certain amount of that resource in the world. One example of these resources is oil. When we use up all the oil in the world, there will be no more.
There is a second reason for throwing less away. All of our trash has to be put somewhere. Often, it is put into garbage dumps（垃圾场）. Much of that trash will be there for hundreds of years. The dumps ill be filled up with all this trash.
There are three ways to cut down on trash.
One way is to recycle. When you recycle something, it means it is made into another shape and used again. Old newspapers may become paper bags. A glassware can be melted（熔化）and made into a bottle.
Another way to cut down on trash is to reuse things. You can wash and use a bottle again that can hold mustard（芥末酱）or something else.
The third way to cut down on trash is to reduce the amount of trash you make, for example, stopping buying things that you don’t need in the first place. That reduces the amount of the earth’s resources.
任务型阅读：根据文章内容填写下面表格。（10分）
| Reasons for throwing less away | Some resources are 1 . |
| The 2 will be filled up with all this trash. | |
| To 3 something. | |
| Ways to cut down on trash | To 4 things. |
| | |
| To 5 the amount of trash you make. |
Why do we need to throw less away? There are two reasons. One is that some resources（资源）are nonrenewable（不可再生的）. That means there is only a certain amount of that resource in the world. One example of these resources is oil. When we use up all the oil in the world, there will be no more.
There is a second reason for throwing less away. All of our trash has to be put somewhere. Often, it is put into garbage dumps（垃圾场）. Much of that trash will be there for hundreds of years. The dumps ill be filled up with all this trash.
There are three ways to cut down on trash.
One way is to recycle. When you recycle something, it means it is made into another shape and used again. Old newspapers may become paper bags. A glassware can be melted（熔化）and made into a bottle.
Another way to cut down on trash is to reuse things. You can wash and use a bottle again that can hold mustard（芥末酱）or something else.
The third way to cut down on trash is to reduce the amount of trash you make, for example, stopping buying things that you don’t need in the first place. That reduces the amount of the earth’s resources.
任务型阅读：根据文章内容填写下面表格。（10分）
|
Reasons for throwing less away |
Some resources are 1 . |
|
The 2 will be filled up with all this trash. |
|
|
To 3 something. |
|
|
Ways to cut down on trash |
To 4 things. |
|
|
|
|
To 5 the amount of trash you make. |
ow to save the wild animalsAnimals are people's friends．But many
no room to live in except the zoo．And many of the wild