题干

下列关于可逆反应的叙述正确的是(  )

A:可逆反应是指既能向正反应方向进行,同时又能向逆反应方向进行的反应

B:2H2O2H2+O2与2H2+O22H2O互为可逆反应

C:对于可逆反应,当正反应速率增大时,逆反应速率就会减小

D:外界条件对可逆反应的正、逆反应速率影响的程度不一定相同

上一题 下一题 0.0难度 选择题 更新时间:2019-04-18 08:09:38

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D

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    The 2016 Rio Olympic Games have come to an end. Without doubt, many Chinese sports fans sat in front of the TV and cheered our athletes on, hoping that they would get as many gold medals as possible.

    But sometimes our desire for gold medals can result in the sadness of failure. When Liu Xiang, China's track hero, pulled out of the Beijing Olympics due to injury, he greatly disappointed many Chinese sports fans.

    But things are different now. In the 2016 Rio Olympic Games, we saw a healthier and more lenient Chinese attitude toward the sports people, fully in line with the Olympic spirit.

    China didn't win any gold medals on the first day. But, instead of criticizing the athletes who failed to finish on top of the podium(领奖台), the majority of fans were happy with their efforts. “Reacting in the right way when an athlete misses out on gold shows the maturity of a person, and is also a challenge for a country to face up to in the process of development,” commented CRI.

    Swimmer Fu Yuanhui won fans' hearts, even if she only won a bronze medal in the 100m backstroke final. Her fans on her Sina Weibo micro blog have increased 100,000 to over 6 million. Many sports fans appreciated her straightforward character and attitude toward competition.

    “The warm support from Internet users shows that public attitude toward competitive sport and the Olympics have gotten to a higher level,” said an article in the People's Daily.