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It's said that prices have ________ again.


  1. A.
    gone down
  2. B.
    brought down
  3. C.
    been gone down
  4. D.
    reduced
A
解析：
【巧解導(dǎo)析】go down是不及物動(dòng)詞短語(yǔ)，故C不對(duì)；
bring down是及物動(dòng)詞短語(yǔ)，reduce是及物動(dòng)詞，故B，D不正確．
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After China’s first satellite into the Earth’s orbit in 1970 came four flights of unmanned Shenzhou missions(飛行) from 1999 to 2002. The country carried out its first one-piloted space flight in October, 2003, making China the third country in the world to have independent human spaceflight ability after the Soviet Union and the United States. Then came another breakthrough on October 12, 2005, when Shenzhou 6, China’s second human spaceflight, was launched, with a crew of two astronauts. What’s more, the landmark(里程碑)spacewalk done by Zhai Zhigang, one of the three boarding Shenzhou 7, launched on Sept. 25, 2008, leads the country further in its space exploration.
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D．China’s scientists are researching into techniquesfor soft lunar landing
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With great expectations, people all over the world are looking forward to China's greater space achievements．

1.According to the text, which of the following is TRUE?

    A．China sent its first satellite into the Moon's orbit in 1970．

    B．China is the third country in Asia to make human spaceflight．

    C．By now, 5 astronauts have made successful spaceflight by Shenzhou spaceship．

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    A．China's road to outer space has been very smooth for a long time

    B．the lunar regolith is believed to be poor in a clean fuel called helium-3

    C．China's scientists are researching into techniques for soft lunar landing

    D．China's lunar exploration project was started in 2004 and completed in 2007

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