求一篇以Human population has increased rapidly为话题的作文,120字左右,包括原因,影响
题目
求一篇以Human population has increased rapidly为话题的作文,120字左右,包括原因,影响
今晚写完的,
答案
Population Control
Progress in science and the improvement of living conditions have led to the rapid growth of the world population.Modern medicine,for example,has made it possible for babies to grow up healthily and for people to live longer.With improved living conditions,particularly in the countryside,people tend to have larger families.As a result,the world population has increased so rapidly that it has now exceeded 6 billion.
But the overgrowth of population presents a threat to the existence of human society.A large population demands a great deal of food supply and shelter space.However,limited productivity and scarce world resources can hardly meet the needs of the ever-increasing population.Thus,in the long run,the overgrowth of the world population will only harm mankind.
To guarantee the steady development of human society,mankind must realize the consequences resulting from fast population growth and carry out a family planning programme.Only by adopting effective measures,can human society develop steadily and have a bright future.
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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