阅读下面材料，从每题所给的三个选项（A、B和C）中，选出最佳选项．

Many kids want to help keep the environment clean but don't know where to start．In

fact，even the simplest everyday activities can make a difference to the environment．

Here is how：

Don't litter．Litter can pollute our water and can do harm to us and to wildlife．If you see litter，pick it up．

Recycle bottles，paper and reuse plastic bags，These are good habits to develop and can really improve our environment．

Always turn off lights when they are not being used，Use your bike or walk to near places rather than drive a car．Encourage your friends and

family to do the same．

Don't throw your old clothes or toys away．Give them to a local charity（慈善组织） or a friend that may need them．

Byfollowingthesewaysandusingtheminyoureverydaylife，you will make the world a

greener place．It's never too late to start，and there is no better time than right now，

66．We can learn from the passage that　　

A many students know how to keep the environment clean

B，we'd better walk or ride there if we travel a short distance

C we should turn off the lights when we are in the classroom

67．What does the underlined phrase"make a difference to"probably mean？　　

A pollute B create C influence

68．If you see litter in the school，you should．　　

A．turn to teachers B pick it up C Let it alone

69，What's the main idea of the passage？　　

A Reuse plastic bags．

B，Give away old clothes．

C How to protect environment，

70，What's the Chinese meaning of the last sentence in the passage？　　

A环保行动，为时未晚．

B 讲究卫生，人人有责．

C保护环境，从小做起．