下列各组铁路线,既穿越黄河,又穿越长江的是[ ]
A、陇海线、兰新线、包兰线
B、京哈线、京包线、京九线
C、京沪线、京广线、京九线
D、沪杭线、浙赣线、湘黔线
答案:C
In China, it is believed that spring is a season ______people often feel sleepier.
A.that
B.which
C.as
D.when
解剖死腔容积平均为()
A.100ml
B.150ml
C.200ml
D.250ml
E.300ml