题目

  根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，并在答题卡上将该项涂黑。选项中有两项为多余选项。 Recently some American scientists have given a useful piece of advice to people in industrialized countries. They say people should eat more of the same kind of food eaten by humans living more than 10,000 years ago.    1   The scientists say that human life has changed greatly. Our bodies have not been able to deal with these changes in lifestyle and this has led to new kinds of sicknesses.    2    They are called “dis一定质量的理想气体，在等压变化过程中，温度由27℃升高1℃，增加的体积为原来的　　　A．1/237B．1/301C．1/300D．1/27