题型：选词填空（多句） 题类：常考题 难易度：容易
外研（新标准）版七年级英语下册Module 12 Unit 2 Vienna is the centre of European classical music. 课时练习
piece，elder poor，another |
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nothing healthy order stop no longer do for warm luck whole all against |
Our environment
Nowadays, the air is full of dust (灰尘). The water is {#blank#}1{#/blank#} clean and clear. The land is much poorer. In {#blank#}2{#/blank#} to build more houses or other buildings, we cut down trees. As a result, the Earth is becoming {#blank#}3{#/blank#} and warmer.
{#blank#}4{#/blank#}, people have realized (认识到) how serious the problem is. The polluted water and air make us {#blank#}5{#/blank#}. We can't plant anything on poor land, so we will have {#blank#}6{#/blank#} to eat. The {#blank#}7{#/blank#} world will come to the end.
Therefore, we have to protect (保护) our environment. It is hard for us {#blank#}8{#/blank#} using these kinds of things. Though we have {#blank#}9{#/blank#} a lot to protect the Earth, it is not enough. So it is time {#blank#}10{#/blank#} us to do something.
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