下列属于相对性状的一组是 [ ]
A．人的身高与体重
B．玉米的白粒与黄粒
C．兔的长毛与黑毛
D．家兔的白毛与北极狐的白毛
答案：B
小儿斜视手术中最严重的并发症是恶性高热。
I was ______ in my reading, and didn't at first hear the doorbell ring.
A．immured
B．immersed
C．busy
D．infatuated
