题目

For the millions and millions of people living in modern times, they might have to change their diets, especially ____ with poorer nutrition quality.        A.those                  B.ones                                              C.it                 D.that 答案:A关于惯性的下列说法中正确的是( )A.物体能够保持原有运动状态的性质叫惯性B.物体不受外力作用时才有惯性C.物体静止时有惯性,一开始运动,不再保持原有的运动状态,也就失去了惯性D.物体静止时没有惯性,只有始终保持运动状态才有惯性
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