对天然气中毒的患者，应采取（ ）体位放置。
A．俯卧位，面向下
B．仰卧位，面向上
C．仰卧位，头侧向两边
参考答案：B
Jackie，you hang all your clothes in the room like this！
A．wouldn’t
B．needn’t
C．mustn’t
D．oughtn’t
Liu Yang is the first Chinese woman astronaut has ever traveled in space.
A．whom
B．which
C．who
D．whose
