下列可以被核准注册为商标的有()。
A、“最亮”牌灯泡
B、“补血”牌营养液
C、“巧妙”牌手表
D、“钢铁”牌汽车
参考答案:C
Every year a flood of farmers arrive in Shenzhen for the money-making jobs they _____ before leaving their
hometowns. [ ]
A. promised
B. were promised
C. have promised
D. have been promised
火车在平直轨道上匀速行驶,门窗紧闭的车厢内有一人向上跳起,发现仍落回原处的原因是:()
A.人跳起后,车厢内空气给他以向前的推力,带着他随同火车一起向前运动;
B.人跳起瞬间,车厢地板给他一向前的推力,推动他随同火车一起向前运动;
C.人跳起后,车在继续向前运动,所以人落下后必定偏后一些,只是由于时间很短,偏后的距离不明显
D.人跳起后直到落地,在水平方向上始终和车具有相同的速度。