问题
选择题
Be careful when you cross the road in rush hours so as to avoid by a car．
A．being knocked down
B．knocking down
C．to be knocked down
D．to knock down
答案
答案：A
题目分析：考查非谓语动词作宾语的用法。Avoid后只接doing，且knock down 与其逻辑主语you 是被动关系，要用being knocked down,故选A。句意：在上下班高峰期过马路时你要小心，以免被车撞了。
