单选题 Professor Johnson's retirement ______ from next January.
A. carries into effect B. takes effect
C. has effect D. puts into effect

【正确答案】 B

【答案解析】[解析] carry into effect表示“实行，实现”；take effect指“开始实行，开始生效”，为不及物词组。如：The contract takes effect as of October 1．本合同从十月一日起生效。所以，答案为B。