现行《国际危规》前四册的适用范围是（）。
A．所有海上危险货物的运输
B．散装危险货物的运输
C．包装危险货物的运输
D．以上都是
参考答案：C
_______he is, he seldom shows his precious coins to others.
A．Coin-collector as
B．As a coin-collector
C．A coin-collector as
D．Coin-collector that
