单选题 The new appointment of our president ______ from the very beginning of next semester.
A. takes effect B. takes part C. takes place D. takes turns

【正确答案】 A
【答案解析】本题考查动词短语辨析。take effect“生效”，take part(in)“参加”，take place“发生”，take turn“轮流”，只有选项A符合题意。