Question

【题目】阅读下面材料，在空白处填入适当内容（不多于3个单词）或括号内单词的适当形式。

In the past, human activities 【1】 (have) little effect on global warming, but now they have caused the rise of the earth temperature. All scientists agree that the increase in the temperature results 【2】 the burning of fossil fuels. One of some byproducts（副产品） 【3】 (call) greenhouse gases is carbon dioxide(二氧化碳) which can trap more heat energy in the atmosphere.

Over the last 100 years, the temperature of the earth 【4】 (increase). The 【5】 (attitude) towards this rise are completely different. Some are positive 【6】 others are negative. Those who are positive think that without the greenhouse gases the earth would be 【7】 (cool) than it is, 【8】 would not be suitable to live on. Others think the rise of the earth temperature may cause severe storms, floods, droughts（干旱） and so on.

【9】 (actual), green house gases will continue to build up in the atmosphere. Luckily, we human beings are doing what we can 【10】 (reduce) green house gases. More importantly, individuals can make a difference.

Answer 1

【答案】

【1】had

【2】from

【3】called

【4】has increased/has been increasin

【5】attitudes

【6】while

【7】cooler

【8】which

【9】Actually

【10】to reduce

【解析】

【1】had 考查动词的时态。根据时间状语In the past可知用一般过去时；

【2】from 考查动词短语。Result from导致；

【3】called 考查非谓语动词 。句意：其中一个副产品被叫做温室气体，是二氧化碳，它会阻止热量发散到空中；

【4】has increased/has been increasing 考查动词的时态。句意：在过去的一百年里，地球的温度一直在上升。

【5】attitudes 考查名词的复数。根据谓语动词 是are，可知主语是复数形式。

【6】while 考查连词。句意：一些人很积极而一些很消极。

【7】cooler 考查形容词的比较级。根据than可知用一般过去时；

【8】which 考查定语从句。句意：那些乐观的人认为没有温室气体地球会变得更冷，这不适合居住。

【9】Actually 考查副词。句意：事实上，温室气体有助于大气的建立。

【10】to reduce 考查非谓语动词 。句意：幸运地是，人类应该做我们所能做的来减少温室气体排放。

考点 ：语法填空。