问题
选择题
Many teenagers feel lonely, __________ no one understands them and the changes they are going through.
A．as if
B．like if
C．because of
D．for that
答案
答案：A
题目分析：考查as if的用法：as if是“好像”引导状语从句，句意：很多年轻人感到孤单，好像没有人理解他们和他们经历的改变。BD表达不对，C项是介词短语“因为”，选A。