Question

There is still a strong argument ________ mobile phones are a particular risk to children.

A．when	B．which
C．that	D．what

Answer 1

C

句意：仍然有人坚持认为，手机会对孩子造成特定的危险。分析句子结构并结合句意可知，空处引导同位语从句，从句不缺少成分，应用that引导。