Question

Some people are worrying about the possibility ________ mobile phones could be responsible for a range of illnesses, from rashes(皮疹) to brain tumors．

A．that

B．why

C．how

D．whether

Answer 1

A

这题考查that引导同位语从句，修饰possibility，句意是：一些人担心手机有可能会导致一系列疾病，皮疹和脑肿瘤。选A。