At present, human beings are causing changes in the Earth’s climate. Global warming could be one of 1 biggest environmental problems.
Global warming refers 2 an average increase in the Earth’s temperature that, in turn, leads to climate change. The temperature of the Earth 3 (control)by greenhouse gases such as carbon dioxide 4 trap heat from the sun in the Earth’s atmosphere. Without these 5 (natural)occurring gases, the sun’s rays would bounce back into space leaving the Earth cold and impossible to live on. When these gases in the atmosphere increase, however, more heat is trapped and the Earth’s temperature rises.
Governments all over the world have a 6 (responsible)to reduce the amount of carbon dioxide. If less carbon dioxide goes into the atmosphere, global warming 7 (slow)down.
Experts advocate that each person play their part. They suggest 8 (make)small changes like taking public transport, recycling, and buying light bulbs that use 9 (little)energy. Even simple things like using recycled paper can help. If we add up all these small 10 (change)worldwide, they won’t be such small changes. They could save our future. After all, there’s no substitute for our Earth. It’s all we’ve got to live on.
1. 2. 3. 4. 5.
6. 7. 8. 9. 10.
答案
1.the 形容词最高级biggest之前应用定冠词。
2.to refer to为动词短语,意为“指的是”。
3.is controlled 主语是动作的承受者,结合语境可知,空格处应用一般现在时的被动语态。
4.which 先行词指物,关系词在从句中作主语,故用which引导定语从句。
5.naturally 空格处在句中作状语,故填提示词的副词形式。
6.responsibility 空格处作宾语,结合其前的冠词可知,要填名词。
7.will slow 空格处是将要发生的动作,故用一般将来时。
8.making suggest之后应该接动名词making作宾语。
9.less 此处暗含了一种比较的语气,故用比较级。
10.changes 根据these可知,可数名词change应用复数形式。
