With the development of our society, energy in the world bees more and more limited, so it is quite important for us to save energy and to protect our environment。 As a student, there are a lot of methods we can do to save energy at home。 For example, first, we can turn off the light as well as other appliances when we are not using them。 Second, recycle the waste water, (共 720 字) [閱讀本文] >>