关于自然灾害的英语作文750字

Natural Disasters-⾃然灾害

In the past hundred years, there have heen frequent natural disasters, such a s floods, droughts, mud-rock flows, sei smic sea waves, earthquakes, windstor ms and the stretching of new deserts. The disasters have killed millions upon millions of people, destroyed countless homes, and wiped out numerous pieces of fertile land.

Now more and more people become aw are that those disasters have much to do with what we have done to the eart h. We have cut down too many trees in the forests,we have badly polluted the environment, we have shocked our own home-planet time and again with treme ndously powerful explosions of nuclear bombs. As a result, climates have beco me abnormal, rainwater rushes down hi llsides angrily, and the underground ene rgy goes up to revenge itself on us.

The earth is our only home-planet. It is urgent for us to stop damaging it, and to do our best to protect it and make i t a lovely place suitable to live in, for we have nowhere to go and survive exc ept where we are now.

⾃然Disasters-⾃然灾害

在过去的年⾥,有的频繁的⾃然灾害,如洪 ⽔、⼲旱、泥⽯流、地震海浪、地震、各 地,狂风拉伸新沙漠。在灾害数千万⼈死 亡,摧毁了⽆数的房屋,摧毁了许多块肥沃 的⼟地。

现在越来越多的⼈意识到这些灾害有多与 我们所做的⼀切都在地上。我们砍伐太多 的树⽊在森林⾥,我们已经严重污染环境, 我们有我们⾃⼰的home-planet震惊了⼀ 次⼜⼀次的爆炸和巨⼤的核弹。作为⼀个 结果,⽓候已经变得异常,⾬⽔⼭坡上冲下 来,⽓愤地和地下能量上升⾄复仇本⾝在 我们⾝上。

一段公路边有杨树151棵，每相邻两棵之间的距离原来是3米，现因树林显得密，改成5米的间隔，有几棵不用动

原来杨树有151棵，那么就有：151-1=150个间距。

原来间距为3米一颗，那么路长为：150×3=450米。

现改为5米一颗间距，要求有几棵树不用动，那么就要先求出3和5的最小公倍数为：3×5=15

那么450里面有多少个15的倍数呢，就用：450÷15=30个，再加上第一颗树不用动，实际有多少棵树不用动就为：30+1=31棵

答：有31棵树不用动。

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