孤立肾肾癌患者肾切除后，需要观察多长时间无复发才能接受肾移植术（）。
A.3个月
B.5个月
C.6个月
D.12个月
E.24个月
参考答案：D
Developed countries, like the US, have moved the some manufactures to the developing countries. Is it true or not? （）
A.Yes
B.Not
C.I don’t know
D.Not mentioned in this paragraph
倡导合理消费，力戒奢侈浪费，制止奢靡之风。在（）各环节落实全面节约。
A、生产
B、流通
C、仓储
D、消费
