问题
选择题
The traffic rule says young children under the age of four and ____ less than 40 pounds must be in a child safety seat.
A．being weighed
B．to weigh
C．weighed
D．weighing
答案
答案：D
考查分词做定语用法。因为children与weigh(重达…)构成主动关系，使用现在分词短语Weighing less than 40 pounds做定语修饰名词young children.句意：交通法说四岁以下和轻于40磅的儿童必须坐在儿童安全椅上。故D正确。