1.Five hundred yuan a month（）enough to live on A.isB.areC.is beingD.has been2.（）of the buildings were ruinedA.Three fourth B.Three fourC.Three-fourthsD.Three-four3.Consult （）for questions about earthquakesA.the six index B.index sixC.sixt

1.Five hundred yuan a month（）enough to live on A.isB.areC.is beingD.has been2.（）of the buildings were ruinedA.Three fourth B.Three fourC.Three-fourthsD.Three-four3.Consult （）for questions about earthquakesA.the six index B.index sixC.sixt
1.Five hundred yuan a month（）enough to live on
A.is
B.are
C.is being
D.has been
2.（）of the buildings were ruined
A.Three fourth B.Three four
C.Three-fourths
D.Three-four
3.Consult （）for questions about earthquakes
A.the six index B.index six
C.sixth index
D.index numbering six
11.She went to the countryside ()
A.in the morning at nine on June first ,1968
B.on June first ,1968 in the morning at nine
C.at nine in the morning on June first ,1968
D.on June first ,1968 at nine in the morning
12.Three-fourths of the surface of the earth () covered with water
A.are
B.is
C.were
D.be
13.This month the production of stainless steel in our steelworks has increased () 2,000 tons
A.with
B.in
C.on
D.by
14.With the miniaturization of the structural components the weight of these electric devices has decreased () 30 percent
A.as
B.with
C.in
D.by
15.The Olympic Games are held ()
A.every four years
B.every four year
C.every fourth years
D.every four-years

1.Five hundred yuan a month（）enough to live on A.isB.areC.is beingD.has been2.（）of the buildings were ruinedA.Three fourth B.Three fourC.Three-fourthsD.Three-four3.Consult （）for questions about earthquakesA.the six index B.index sixC.sixt
1.　A　"five hundred yuan"作为一个整体看,是单数.根据句意,应该用一般现在时.
2.　C 分数的表达,分子用基数词,分母用序数词,当分子大于1时,分用加s
3.　B　索引六,Index six.编号名称在前,数字在后.如：Room 201
11. C 英语当中的时间、地点,要按由小到大的顺序.
12. B 3/4的地球"surface"（表面）,surface不可数,用单数.
13. D 增长了2000吨,表示增长或减少的绝对数值用介词by
14. D 道理与13题一致.
15. A 每四年：every four years
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1A 2A 3A 11A 12B 13D 14D 15B
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