Question

Electric bicycles which run on battery-operated (电瓶) motors are winning over riders of ordinary bikes1their speed, quality and environmental advantage.
They were first2on 1980s in China, but the selling was not very good. Today, thanks3improvements on battery quality, the electric bikes sell well. There are now more than 100 electric bicycle producers in China and 26 million such bicycles were produced in 2011. Japan is another large4of such bicycles in the world with a total production reaching 381,72lin 2010.
5China is one of the largest producers of electric bicycles in the world, the6of its producers with mass production (大批量生产) is actually small.
Electric bicycles are still7in China. Time is needed for people to become familiar with them and accept them. Each bike’s price of between 2,000 yuan (US $318) and 3,000 yuan (US $477) is still8for ordinary citizens (民众). Although such bikes are quick, safe and9to operate, their batteries still have shortcomings (不足). They weigh more than 10 kilograms; their service life is10two years and they11400 yuan each.
There were more than 450 million bikes in China in 2006. If just one percent of all these bikes are replaced by electric12, the market will be very large. And13the battery is further improved and the price is14, many of us will not be able to keep back from15the latest electric bikes

1. 1.
   1. A.
      because of
   2. B.
      because
   3. C.
      towards
   4. D.
      at
2. 2.
   1. A.
      build
   2. B.
      built
   3. C.
      building
   4. D.
      to build
3. 3.
   1. A.
      for
   2. B.
      in
   3. C.
      by
   4. D.
      to
4. 4.
   1. A.
      producer
   2. B.
      production
   3. C.
      produce
   4. D.
      to produce
5. 5.
   1. A.
      But
   2. B.
      If
   3. C.
      Although
   4. D.
      When
6. 6.
   1. A.
      buyer
   2. B.
      number
   3. C.
      price
   4. D.
      owner
7. 7.
   1. A.
      old
   2. B.
      tall
   3. C.
      new
   4. D.
      short
8. 8.
   1. A.
      small
   2. B.
      large
   3. C.
      expensive
   4. D.
      high
9. 9.
   1. A.
      easy
   2. B.
      difficult
   3. C.
      hard
   4. D.
      easily
10. 10.
    1. A.
       other than
    2. B.
       more than
    3. C.
       over
    4. D.
       less than
11. 11.
    1. A.
       spend
    2. B.
       cost
    3. C.
       take
    4. D.
       make
12. 12.
    1. A.
       cars
    2. B.
       bike
    3. C.
       ones
    4. D.
       one
13. 13.
    1. A.
       where
    2. B.
       unless
    3. C.
       whether
    4. D.
       if
14. 14.
    1. A.
       increased
    2. B.
       raised
    3. C.
       reduced
    4. D.
       lifted
15. 15.
    1. A.
       buying
    2. B.
       brought
    3. C.
       to buy
    4. D.
       buy

Answer 1

ABDAC BCDAD BCDCA
1.根据前后文的关系可知答案为A，表示 由于的意思，在此符合题意。
2.本题考查的是一般现在时的被动语态，故选B因为只有B为被动语态。
3.thanks to 表示多亏了，符合句子意思，故选D
4.只有答案A，符合题意，表示日本也有生产厂家，故选A
5.根据上下文的联系，可知答案为C，表示尽管的意思。
6.根据上下文的内容可知答案为B
7.根据下文的内容可知答案为C
8.价格高，用high，故选D
9.根据although，可知答案为A，表示比较容容易，故选A
10.根据their batteries still have shortcomings (不足)可知答案为D
11.主语为物，表示花费为cost，故选B
12.根据上下文内容可知答案为C，表示代替上文的电瓶车，故选C
13.根据下文内容可知答案为D，表示假设的意思。
14.be+动词的过去分词，表示被动语态，故选C
15.from为介词，其后接动词ing 形式，故选A