单项选择题

Questions 9 and 10 are based on the following news. At the end of the news item, you will be given 10 seconds to answer each of the two questions.
Now listen to the news.
According to the news, over the past quarter century China’s economy has ______.

A．doubled
B．reached to $ 7 trillion
C．increased four times
D．increased by $ 7 trillion
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单项选择题
It can be inferred from paragraph I that ff we don’t take account of the fact that soils vary so much,______.
A．we won’t know their properties
B．we won’t make best use of the land
C．the ecosystem will fail
D．the row of water will deteriorate
单项选择题
According to the entry, which of the following sentences is are correct (1) People here prefer to tide their own bicycles than riding the town buses. (2) People here prefer riding their own bicycles than riding the town buses. (3) People here prefer tiding their own bicycles to riding the town buses. (4) People here prefer to ride their own bicycles to to ride the town buses.
A．They are all correct.
B．They are all correct except (4).
C．Both (2) and (3) are correct.
D．Only (3) is correct.
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