某品牌的复读机每台进价是400元，售价为480元，“五·一”期间搞活动打9折促销，则销售1台复读机的利润是（ ）元。
32
—I heard a bus accident happened yesterday.
—The bus crashed. Luckily, only a few passengers aboard were _____ injured in the traffic accident.
A．slightly
B．approximately
C．exactly
D．gradually
瓦斯区域明火作业时，发现瓦斯浓度高于（）必须立即停止动火。
A.0.5%
B.1%
C.1.5%
D.2%
