Question

【题目】There is some doubt among people _________ $749 is too much for an iPhone 5.

A. that B. whether

C. what D. if

Answer 1

【答案】B

【解析】试题分析：考查同位语从句。句意：人们中有些疑问，750美元是不是对于一部iPhone6太多了。空后是doubt的同位语从句，doubt疑惑，同位语从句应用whether引导，if不可引导名词性从句，故选B。