单选题 He appeared to be serious, but the truth is that for one reason or another, he didn't get his joke ______ very effectively.

【正确答案】 C

【答案解析】句意：他装得很严肃，但是事实是，由于某种原因，他并没有让人明白他开的玩笑。get across(使)被了解；讲清楚，让…听懂。get down取下；咽下；记下。get around规避；说服。get out离开，逃避；泄露；取出。除选项C外其他选项均不符合句意。