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3.Did you have a favorite plastic toy when you were a child?Did it break?Did your parents throw it away?Well,I know where it is.It's floating(漂浮)in the Pacific Ocean.Well,let me explain how it (89)can get(get) there.
Many countries put their garbage in the Pacific.Most of the garbage sinks.But plastic floats and   (90)moves(move).The North Pacific Gyre(环流) pulls things towards the middle.So,all the plastic ends up in the same place.One scientist says the area looks just like"plastic soup".
This"plastic soup"(91)was discovered (discover) about ten years ago.Since that time the amount of plastic in his area (92)has increased(increase) a lot.And this plastic will not just go away,it takes 400years for plastic to degrade(分解).And,even worse,fish and sea birds are eating the plastic.They think it looks like food.The plastic doesn't kill them directly,but the fish (who are not smart!) think they are full.So,they stop (93)eating(eat) and die of hunger.Dolphins and whales will also eat plastic and die.
Governments are starting to work together to clean up this area,but it will take many years.That's why we should always try (94)to recycle(recycle) plastic…even our old toys.

分析 【文章大意】本文讲的是环保问题,即海洋中的塑料垃圾.海洋中的塑料垃圾有其特点和危害,必须设法回收利用.

解答 89.can get.考查情态动词后面跟动词原形.句意为:让我告诉你它怎么才能到那里.分析句子成分可知,空格处为谓语,故填动词.根据句意,此处为"能够到达"之意,需要用到情态动词can和动词get.本句说的是事实,故用一般现在时;情态动词can无变化,故填can get.
90.moves.考查一般现在时.句意为:但是塑料会漂流和移动.分析句子成分可知,and前后为两个并列的成分,都是谓语动词,且都是第三人称单数形式.move为动词,意思是"移动",其第三人称单数形式为moves.故填moves.
91.was discovered.考查一般过去时的被动语态.句意为:这种"塑料汤"是十年前发现的.分析句子成分可知,空格处为谓语,故填动词discover的某种形式.主语soup和动词discover为动宾关系,故用被动语态.根据时间状语"about ten years ago",动作发生在过去,故用一般过去时.故填was discovered.
92.has increased.考查现在完成时.句意为:自从那时到现在,他所在区域的塑料已经增加了很多.分析句子成分可知,空格处为谓语,故填动词increase的某种形式.根据时间状语"Since that time",时态用现在完成时,即"助动词has/have+过去分词"形式.主语the amount of plastic 为第三人称单数,助动词用has; increase的过去分词为increased.故填has increased.
93.eating.考查stop doing sth.句意为:因此,他们停止吃东西,于是就饿死.分析句子成分可知,空格之前为动词stop,故填动词eat的某种形式.stop doing sth和stop to do sth分别表示"停止做某事"和"停下来,做某事".根据句意,本句属于第一种句型,即stop eating,表示"停止吃东西".故填eating.
94.to recycle.考查try to do sth.句意为:这就是我们为什么要尽量回收塑料的原因.分析句子特点可知,本句为try to do sth句型,表示"努力做某事",故填不定式.try to recycle努力回收.故填to recycle.

点评 首先要通读短文,掌握大意,特别要注意上下文之间的联系,或根据所给单词,或根据首字母提示,或根据汉语提示,选择恰当单词的恰当形式来填空,就可以确定答案.

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