短文填词（共10小题；每小题1分，满分10分）
In the past hundred years, there have been frequent natural
disasters, _____ as floods, droughts, earthquakes. The disasters                         76._________
have killed m_____ of people, destroyed countless homes, and                77._________
wiped out numerous ______ (piece) of land.                               78. _________
Now more and more people become a_____ that those disasters               79. _________
have much to do ______ what we have done to the earth. We have cut         80. _________
down many trees in the forests, and have badly ______ (pollute)              81. _________
the environment. As a ______, climates have become worse and worse.       82. _________
The earth is our home-planet. It’s urgent for us to stop _____ (damage)         83. _________
it, and to do our best to p____ it and make it a lovely place suitable to live        84. _________
in, for we have n____ to go and survive except where we are now.              85. _________