如图是美国轰炸伊拉克的精确制导导弹，正在飞向巴格达。请在图中A点作出导弹的受力示意图。
按心率计算，运动适宜强度为最高心率的
A．355～50%
B．50%～65%
C．70%～85%
D．85%～100%
E．以上都不对
—This wall of air is an effective answer to the problem and it ______ work. —But it is a question to put such a wall of air around the statue.
A. may B. mustC. should D. could
