角的终边与始边成一直线时所形图成的角叫（ ）角，角的终边旋转一周时所形成的角叫（ ）。
平；周角
The national congressman wearing traditional clothes, in _______ hotel-room I just interviewed him, comes from a remote mountain village in West China.
A．whom
B．his
C．whose
D．which
冬季，某居民在自家较封闭房间内的一盆煤火旁发生昏迷，皮肤黏膜呈樱桃红色，导致该症状最可能的空气污染物为（）
A.CO
B.CO2
C.SO2
D.NOx
E.PAH
