在第二次工业革命中兴起的产业是[ ]
A．铁路运输业
B．煤炭工业
C．汽车工业
D．轮船工业
答案：C
---We’d like a double room with a view , please.
---I’m sorry, but all double rooms with a sea view _____________already.
A．were reserved
B．had been reserved
C．have been reserved
D．have reserved
姜片虫重要保虫宿主是( )
A．猫B．犬C．猪D．羊E．牛
