题目

下列关于惯性的说法中,正确的是            (    )     A.汽车刹车时,乘客的身子会向前倾斜,是因为汽车有惯性     B.做匀速直线运动的物体和静止的物体没有惯性     C.物体的惯性只有在物体速度改变时才表现出来 D.物体都具有惯性,与物体是否运动无关,与物体速度是否变化也无关V.句型转换1.There is some water in the bottle.(用any改为否定句)There______________ water in the bottle.2.This skirt is 49 yuan.(就画线部分提问)________________is the skirt?3.Can I help you?(改为同义句)What can I ______________ you?4.My brother is reading a book under the tree.(就画线部分提问)___________your brother___________under the tree?5.He is doing some shopping at the moment.(用often改写句子)He________________some shopping.
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