题目内容
20.No one knows exactly how the earth began.Each(61)religion (religious) and culture has its own ideas about how life began on earth.However,according to a widely accepted theory,the universe began with a"Big Bang".It exploded (62)violently (violent) with fire and rock.They were in time to produce carbon dioxide,nitrogen,water vapour and other gases.Water had also appeared on other planets like Mars (63)but it had disappeared later.(64)Whatmany scientists believe is that the continued presence of water allowed the earth to dissolve (65)harmful (harm) gases and acids into the oceans,which made it possible for life (66)to develop (develop).Many millions of years later,the first extremely small plants (67)multiplied (multiply) and tilled the oceans and seas with oxygen.Later when the plants grew into forests,reptiles appeared for the first time.They produced young generally by (68)laying (lay) eggs.After that,some huge animals,(69)called (call) dinosaurs,developed.However,(70)65million years ago the age of the dinosaurs ended.These disappearance made possible the rise of mammals on die earth.These animals where different from all life forms in the past,because they gave birth (71)toyoung baby animals and produced milk to feed them.分析 短文主要讲了地球是如何产生的.
解答 61.religion,考查名词,and连接两个并列的成分,后面接的是culture,因此使用religious的名词形式religion,由each可知使用名词的单数形式.
62.violently,考查副词,该句使用副词修饰动词exploded.
63.but,考查连词,句子之间是转折的关系,因此使用but来连接.
64.What,考查主语从句的引导词,从句缺少believe的宾语,因此使用表示"什么"的what来引导主语从句,在从句中充当宾语.
65.harmful,考查形容词,此处应用形容词修饰名词gases,harm的形容词为harmful"有害的".
66.to develop,考查固定搭配,make it possible to do sth"是做某事成为可能",该结构中it充当形式宾语,句子的真正宾语为动词不定式.
67.multiplied,考查考查谓语动词的时态,短文描述的是过去的事情,因此谓语动词使用一般过去时.
68.laying,考查动名词,by为介词,后接动词应使用其动名词形式.
69.called,考查非谓语,句子的谓语动词为developed,因此call为非谓语动词,与其逻辑主语some huge animals构成被动的关系,因此使用过去分词短语充当后置定语.
70.65,根据实际,是6500万年前恐龙时代结束,因此答案是65.
71.to,考查固定搭配,give birth to"生育,产生",故答案为to.
点评 对于语法填空这类题,一是懂得分析句子结构,二是知道充当各个句子成分的词类或词性,从语法上确定答案,当然,对于某些固定搭配也要牢记,在平时的学习中要多积累这些词汇或短语,对于句子使用的时态语态也要通过语境进行确定.
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