完型填空。通讀下面的短文，掌握其大意。然后，從每小題的四個選項中選出可填入相應空白處的最佳選擇，并把它前面的大寫字母填入左邊的括號里。

　　We do not know how the first fire was 1 __________ .Early fires on the earth were certainly caused by nature，not by Man，some were caused by lightning in a storm;2 __________，perhaps，by the hot material which came out of a volcano.Quite possibly，at times，the heat of the sun set light 3__________ some dry grass or leaves.At first Man，like other animals，was probably afraid of fire. 4 __________ great was the power of fire that he feared it and worshipped it.Gradually，however，with his better power of thinking，he overcame his fear.Probablly he overcame most of his fear when he 5 __________ how to make fire for himself.Throughout the ages he has learned more about fire，how to control it，and how to use it 6 __________ many ways.Now fire is no longer a master of a god;it is a 7__________ .

　　We call only guess how 8 __________ first learned that a fire was useful and what uses he made of it.By 9 __________ a burning stick from fire which had been started naturally，he could make afire at his own“home”.He could keep the fire burning by adding more dry grass.1eaves and wood.The‰10 __________the chief purpose of frightening animals away.He discovered，by some accident，that flesh roasted in front of a fire 11 __________ better.Then he found that roasted flesh would keep longer，without going bad， 12 __________ uncooked flesh.It must have been much later that Man learned to cook food by heating it with 13 __________water or with steam.He could not use such methods 14 __________ he had learned how to make pots 15__________ holding water.

　　第1題 請選擇出最佳答案填入()。

　　A.made B.produced C.givenD.opened

　　答案：A

　　第2題 請選擇出最佳答案填入()。

　　A.some B.other C.othersD.another

　　答案：C

　　第3題 請選擇出最佳答案填入()。

　　A.at B.to C.towardsD.on

　　答案：B

　　第4題 請選擇出最佳答案填入()。

　　A.So B.Such C.ThatD.And

　　答案：A

　　第5題 請選擇出最佳答案填入()。

　　A.invented B.saw. C.discoveredD.known

　　答案：C

　　第6題 請選擇出最佳答案填入()。

　　A.by B.on C.withD.in

　　答案：D

　　第7題 請選擇出最佳答案填入()。

　　A.servant B.employee C.workmateD.kid

　　答案：A

　　第8題 請選擇出最佳答案填入()。

　　A.Man B.the Man C.heD.Men

　　答案：A

　　第9題 請選擇出最佳答案填入()。

　　A.bringing B.carrying C.takingD.holding

　　答案：C

　　第10題 請選擇出最佳答案填入()。

　　A.meet B.served C.didD.took

　　答案：B

　　第11題 請選擇出最佳答案填入()。

　　A.tasted B.ate C.muchD.is

　　答案：A

　　第12題 請選擇出最佳答案填入()。

　　A.than B.when C.afterD.before

　　答案：A

　　第13題 請選擇出最佳答案填入()。

　　A.boiled B.unboiled C.boilingD.cold

　　答案：C

　　第14題請 請選擇出最佳答案填入()。

　　A.before B.until C.whenD.after

　　答案：B

　　第15題 請選擇出最佳答案填入()。

　　A.to B.with C.inD.for

　　答案：D