滤纸式烟度计的指针指向10,说明了()
A.污染严重
B.污染适中
C.污染较低
D.污染低
参考答案:A
-How do you like our restaurant? -I couldn’t have found a ________ one.
A.good
B.better
C.best
D.fine
辅阻遏物