A:discuss; didn’t agree
B:would discuss; don’t agree
C:discussed; agree
D:should discuss; doesn’t agree
(一)枯藤老树昏鸦.小桥流水人家。古道西风瘦马。夕阳西下,断肠人在天涯。
小明去医院看病,他发现医生给病人检查身体时用到了B超和X光机,其中B超应用的介质是____ ,X光机应用的介质是____ .(填“超声波”或“电磁波”)
— What's Lisa's opinion?— Sorry, I don't know. I haven't got her reply .
下列各组气体中,仅用燃着的木条不能区分出来的是( )