键的长度都是略短于或等于轮毂的长度。()
参考答案:错
服用药物后,在观察荧光屏或者信号灯等明亮物体时,在它们周围会出现晕圈,此药物为 ()
A.红霉素
B.多巴胺
C.地高辛
D.阿莫西林
E.利血平
I can't see any cars near the house, _______ I can see some bikes there. [ ]
A. and
B. but
C. or