环保：Today the quality of our natural environment has become an important issue. The world population is rising so quickly that the world has become too crowded. We are using up our natural resources and at the same time polluting our environment with dangerous chemicals. If we continue to do this, life on earth cannot survive.
Concerned people have made some progress in environmental protection. Governments of many countries have established laws to protect the air, forests and sea resources and to stop environmental pollution.
Still more measures should be taken to solve environmental problems. People should be further educated to recognize the importance of the problems, to use modern methods of birth control, to conserve our natural resources and recycle our products. We are sure that we can have a better and cleaner place in the future.
节约时间：A proverb says,Time is money. But in my opinion, time is even more precious than money. Why? Because when money is spent, we can earn it back. However, when time is gone, it will never return. This is the reason why we must value time.Collected by www．ii63·com
It goes without saying that the time for our study and work is unusually limited. Hence, even an hour is extremely precious. We should make full use of our time to do useful things. As a student,I must make efforts to engage in my study so as to serve our nation and people in the future. But it is a pity that there. are a lot of people who do not know the importance of time. They do not realize that wasting time is equal to wasting a part of their valuable life.collected by II63·com
In a word, we should form the good habit of saving time. Do not put off what can be done today till tomorrow. Laziness will not only bring us failure but also lead us to the road of poverty.
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