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【题目】There is no doubt that the world climate 1 (change) in recent years. Many people blame this change on gases such as carbon dioxide. Animals and humans produce carbon dioxide when they breathe. However, many other human 2 (activity) also let off carbon gases. Anytime something is burnt, carbon is put 3 the atmosphere. Cars and other vehicles burn petrol in their engines, and electrical power plants most often burn fuels such as coal and oil in order to produce electricity.4, the more petrol and electricity we consume, the 5 carbon we are letting off.

One thing we can do to help solve this problem is to walk or use 6 bicycle when possible. Of course, there are times 7 we need to travel long distances. In this case, public transport such as buses and the underground is always a much better choice than a private car or a taxi.

You can also plant a tree,8 trees absorb the carbon dioxide in the air to produce oxygen. Planting a small tree is cheap and easy, and two decades from now, when you look at 9 will have become a large tree, you will find a sense of satisfaction,10 (know) that you did your part to help solve the problem of climate change.

【答案】

1has been changing

2activities

3into

4Therefore/Thus

5more

6a

7when

8because

9what

10knowing

【解析】在最近几年,毫无疑问世界天气一直都在改变。二氧化碳的排放影响了气候变化,文章号召我们尽自己的一份力量帮助解决气候变化问题

1句意:在最近几年,毫无疑问世界天气一直都在改变。可知用现在完成进行时态,故答案为has been changing。

2句意:许多其他人类活动也释放了碳气体。many修饰可数名词复数,可知答案为activities。

3句意:碳被放入大气中。put―――into――,―――放入―――,可知答案为into。

4句意:因此,汽油和电消耗的越多,排放的二氧化碳越多。前后是因果关系可知答案为Therefore/Thus。

5句意:汽油和电消耗的越多,排放的二氧化碳越多可知答案为more。

6句意:为了帮助解决这个问题,要做的一件事情是当有可能的时候步行或用一辆自行车。可知答案为a。

7此处times做先行词,在后面的定语从句中做时间状语,可知答案为when。

8句意:你也能种一棵树,因为树能吸收空气中的二氧化碳所产出的氧气。前后是因果关系,可知答案为becausee。

9句意:二十年之后,当你看到已经变成一颗大树的时候,你会发现满足感。look at后面是一个宾语从句,从句缺少引导词,且从句没有主语,可知答案为what,它在这里其双重作用。

10句意:二十年之后,当你看到已经变成一颗大树的时候,你会发现满足感此时你会知道你尽自己的一份力量帮助解决气候变化问题所带来的结果。现在分词做自然的结果状语,答案为knowing。

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