Although many cities have achieved a financial profit by hosting the Games, the Olympics can be financially risky.
查看答案
When will the man leave
A. Monday.
B. Tuesday.
C. Sunday.
D. Wednesday.
The patient has to take several pills each day to ______ (act) high blood pressure.
When was the operation finished The operation was finished at ______.
A. around 8: 30
B. about 7: 00
C. around 4: 00
碘的消毒原理是
A. 破坏脱氢酶
B. 干扰细菌代谢
C. 凝固蛋白质
D. 沉淀蛋白质
E. 改变细菌细胞膜通透性
微信支付 
支付宝支付