【题目】Believe it or not, some English idioms are very difficult to understand ______ you know the meaning of each word.
A.as ifB.in caseC.now thatD.even if
在线课程【答案】D
【解析】
考查状语从句。句意：信不信由你，即使你知道每个单词的意思,有些英语习语也很难理解。A. as if好像；B. in case万一；C. now that 既然；D. even if即使。此处是even if引导的让步状语从句。故选D。