He loves keeping his own opinion to himself.
查看答案
苯扎溴胺溶液泡手的浓度是
A. 0.01%
B. 0.1%
C. 0.2%
D. 1%
E. 2%
下述哪类物品不宜高压蒸气灭菌的物品是
A. 锐利器械
B. 玻璃类
C. 敷料类
D. 橡胶类
E. 搪瓷类
The reason why the water in this area had been polluted was the ______ (poison) substances had been poured into the river.
what does Jim’s mother think of his pictures
A. She thinks the pictures are beautiful.
B. She can hardly understand them.
C. She understands them well.
微信支付 
支付宝支付