气管厌氧菌感染出现（）。
A.大量脓痰
B.痰有臭味
C.黏脓痰
D.痰中带血
E.粉红色泡沫状痰
参考答案：B
23．In view of lacking preparations for the competition and not wanting to lose face, Johnson eventually decided to _____．
A．drop in
B．drop off
C．drop back
D．drop out
根据人体生物周期变化，驾驶员（）同时处于低潮期时，应尽量不开车。
A.情绪
B.体力
C.情感
D.智力
