题目内容
6．HOW LIFE BEGAN ON THE EARTHNo one knows exactly how the earth began，as it happened so long ago．However，according to a （76）widelyaccepted theory，the universe began with a"Big Bang"that threw matter in all （77）directions．After that，atoms began to form and combine to create stars and other bodies．
For several billion years after the"Big Bang"，the earth was still just a （78）cloudof dust．What it was to become was uncertain until between 4.5and 3.8billion years ago when the dust settled into a solid globe．The earth became so （79）violentthat it was not clear whether the shape would last or not．It （80）explodedloudly with fire and rock．
A TRIP ON"THE TRUE NORTH"
Li Daiyu and her cousin Liu Qian were on a trip to Canada to visit their cousins in Montreal on the （81）Atlanticcoast．Rather than take the aeroplane all the way，they decided to fly to Vancouver and then take the train from west to east across Canada．The（82）thoughtthat they could cross the whole continent was exciting．
Their friend，Danny Lin，was waiting at the airport．He was going to take them and their baggage to catch"The True North"，the cross-Canada train．On the way to the station，he chatted about their trip．"You're going to see some great scenery．Going （83）eastward，you'll pass mountains and thousands of lakes and forests，as well as wide rivers and large cities．Some people have the （84）ideathat you can cross Canada in less than five days，but they forget the （85）factthat Canada is 5，500kilometres from coast to coast．
分析 第一篇短文主要介绍一种理论，地球是如何形成的．
第二篇短文主要介绍Li Daiyu和Liu Qian乘坐"真北方"号火车到加拿大旅游的相关情况．
解答 76．widely 77．directions 78．cloud 79．violent 80．exploded 81．Atlantic 82．thought 83．eastward 84．idea 85．fact
76．widely 考查副词．副词修饰形容词，根据句意，按照广泛接受的理论，填widely，意为"广泛地"．
77．directions 考查名词．介词in后接名词．根据句意，将物质投射到四面八方，填directions．direction意为"方向"．
78．cloud 考查名词．不定冠词a后接名词．根据句意，还只是一团尘埃，填cloud，意为"云"．
79．violent 考查形容词．become是连系动词，后接形容词．根据句意，变得激烈动荡，填violent，意为"剧烈的"．
80．exploded 考查动词时态．根据句子结构，句中缺少谓语动词，根据句意，它猛烈地爆炸喷出了烈火与岩石，填explode，意为"爆炸"，要用一般过去时态，其过去式是exploded．
81．Atlantic 考查形容词．根据常识，Montreal在大西洋海岸，填Atlantic，意为"大西洋的"．
82．thought 考查名词．根据句意，要横穿整个大西洋的想法很是令人兴奋，填thought，意为"想法"，是可数名词．
83．eastward 考查副词．根据第一段中from west to east可知，应是向东去，填eastward，意为"向东"．
84．idea 考查名词． 根据句意，有人想在五天的时间里穿越加拿大，填idea，意为"想法，主意，念头"，是可数名词．
85．fact 考查名词． 根据句意，但他们忘了加拿大从东海岸到西海岸共有5500公里，填fact，意为"事实"，是可数名词．
点评 在一篇200词左右的语篇（短文或对话）中留出10处空白，部分空白的后面给出单词的基本形式，要求考生根据上下文填写空白处所需的内容或所提供单词的正确形式，所填写词语不得多于3个单词．要做好语法填空题，理解短文是解题的前提，扎实的词汇、句型和语法知识是基础，英语国家的背景知识是必要的补充．考生须灵活运用语法知识，如单词词性、单词时态、名词单复数、连接词、代词、冠词等判断各空白处应填写的内容．答完后，还要通读全文，核对所填单词形式是否正确，是否符合语境．
