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。