考研

题干：5.[多选题]对句子Part of the problem is that many homeless adults are addicted to alcohol or drugs.分析正确的是________

选项：A. are addicted to的意思是“对……上瘾”

B. that引导的从句是定语从句

C. 主句的主语是Part of the problem

D. 主句的谓语动词是is

题号：5.【答案】ACD。解析：are addicted to的意思是“对……上瘾”;本句主干为“主系表”结构，主语为Part of the problem，谓语动词时系动词is，表语是that从句。故本题正确答案为ACD。