以下说法中正确的是（　　）

A．质量一定的物体速度越大时，要想停下来越困难，是因为惯性变大的原因

B．挂在绳上处于静止的物体，受到绳的拉力是由于物体的形变引起的

C．静摩擦力不仅能存在于两静止物体之间，也可以存在于两个运动物体之间

D．静止的水平桌面放一本书，桌面对书的支持力与书对桌面的压力相平衡

Light utility trucks have become popular among consumers who buy them primarily for the trucks rugged appearance. Yet although, these trucks are tough-looking, they are exempt from the government’s car-safety standards that dictate minimum roof strength and minimum resistance to impact. Therefore, if involved in a serious high-impact accident, a driver of one of these trucks is more likely to be injured than is a driver of a car that is subject to these government standards.
The argument depends on the assumption that

A．the government has established safety standards for the construction of light utility trucks.

B．people who buy automobiles solely for their appearance are more likely than other people to drive recklessly.

C．light utility trucks are more likely than other kinds of vehicles to be involved in accidents that result in injuries.

D．the trucks’ rugged appearance is deceptive in that their engines are not especially powerful.

E．(E) light utility trucks are less likely to meet the car-safety standards than are cars that are subject to the standards.