硼酸溶液的作用()
A．厌氧菌感染创面的冲洗
B．防止伤口腐烂
C．感染创面湿敷
D．溶解坏死组织
E．杀灭铜绿假单胞菌
参考答案：A, B, C, D
一个直角上角形两个锐角右度数比是2：f，这两个锐角分别是______度和______度．
We should not ________ and laugh at those who have no homes to shelter from the rain and wind.
Instead, we should be sympathetic of them.[ ]
A. look forward to
B. think highly of
C. pay attention to
D. look down upon
