问题
选择题
The traffic rule says that the children ______less than 40 pounds and under the age of four must be in a child safety seat.
A．being weighed
B．weigh
C．weighed
D．weighing
答案
答案：D
考查非谓语动词的用法。Weigh意为权衡，重量为……，用法为the box weighs 40 kg.因此sth 跟weigh之前是主动关系，此处weigh在句中作children的定语，weighing="which" weigh