6．HOW LIFE BEGAN ON THE EARTH
No 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 第一篇短文主要介紹一種理論，地球是如何形成的．
第二篇短文主要介紹Li Daiyu和Liu Qian乘坐"真北方"號(hào)火車到加拿大旅游的相關(guān)情況．

解答 76．widely  77．directions      78．cloud   79．violent     80．exploded  81．Atlantic    82．thought     83．eastward    84．idea      85．fact
76．widely 考查副詞．副詞修飾形容詞，根據(jù)句意，按照廣泛接受的理論，填widely，意為"廣泛地"．
77．directions 考查名詞．介詞in后接名詞．根據(jù)句意，將物質(zhì)投射到四面八方，填directions．direction意為"方向"．
78．cloud 考查名詞．不定冠詞a后接名詞．根據(jù)句意，還只是一團(tuán)塵埃，填cloud，意為"云"． 
79．violent 考查形容詞．become是連系動(dòng)詞，后接形容詞．根據(jù)句意，變得激烈動(dòng)蕩，填violent，意為"劇烈的"．
80．exploded 考查動(dòng)詞時(shí)態(tài)．根據(jù)句子結(jié)構(gòu)，句中缺少謂語動(dòng)詞，根據(jù)句意，它猛烈地爆炸噴出了烈火與巖石，填explode，意為"爆炸"，要用一般過去時(shí)態(tài)，其過去式是exploded．
81．Atlantic 考查形容詞．根據(jù)常識(shí)，Montreal在大西洋海岸，填A(yù)tlantic，意為"大西洋的"．
82．thought 考查名詞．根據(jù)句意，要橫穿整個(gè)大西洋的想法很是令人興奮，填thought，意為"想法"，是可數(shù)名詞．
83．eastward 考查副詞．根據(jù)第一段中from west to east可知，應(yīng)是向東去，填eastward，意為"向東"．
84．idea 考查名詞． 根據(jù)句意，有人想在五天的時(shí)間里穿越加拿大，填idea，意為"想法，主意，念頭"，是可數(shù)名詞．
85．fact 考查名詞． 根據(jù)句意，但他們忘了加拿大從東海岸到西海岸共有5500公里，填fact，意為"事實(shí)"，是可數(shù)名詞．

點(diǎn)評(píng) 在一篇200詞左右的語篇（短文或?qū)υ挘┲辛舫?0處空白，部分空白的后面給出單詞的基本形式，要求考生根據(jù)上下文填寫空白處所需的內(nèi)容或所提供單詞的正確形式，所填寫詞語不得多于3個(gè)單詞．要做好語法填空題，理解短文是解題的前提，扎實(shí)的詞匯、句型和語法知識(shí)是基礎(chǔ)，英語國(guó)家的背景知識(shí)是必要的補(bǔ)充．考生須靈活運(yùn)用語法知識(shí)，如單詞詞性、單詞時(shí)態(tài)、名詞單復(fù)數(shù)、連接詞、代詞、冠詞等判斷各空白處應(yīng)填寫的內(nèi)容．答完后，還要通讀全文，核對(duì)所填單詞形式是否正確，是否符合語境．

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