如图1-4-16所示，A、B、C三个物体叠放在水平桌面上，给B物体施加一个水平拉力F，A、B、C三个物体均保持静止.以下说法正确的是（ ）
图1-4-16
A．A受一个摩擦力
B．B受两个摩擦力
C．C受一个摩擦力
D．A不受摩擦力
答案：D
因A静止，故水平方向不受B给它的静摩擦力，或者说A、B间无摩擦力作用.在F的作用下，B有向右运动的趋势，故C物体对它有向左的静摩擦力，同时C也受B向右的静摩擦力.C在B对它向右的力的作用下有向右运动的趋势，因此，地面对C有向左的静摩擦力.
| 阅读理解。 | ||||||||
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根据短文内容，填写下面的信息表。
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