由于鼓膜向前下方倾斜,因而外耳道前下壁较后上壁长约()。
A.2mm
B.3mm
C.4mm
D.5mm
E.6mm
参考答案:E
The tourists screamed their down to a safe landing when they were sitting in car that “fell” through the air from a tall tower.
A.direction
B.road
C.way
D.voice
具抗癫痫作用的巴比妥类药是()
A.地西泮
B.硫喷妥钠
C.苯巴比妥
D.戊巴比妥
E.司可巴比妥