【简答题】(5分)(1)小白鼠在装有空气的密闭容器中可存活一段时间,说明空气中有 (2)石灰水长期露置在空气中表面会出现白膜,说明空气中有 (3)夏天盛放冰棒的杯子外壁上面附有一层水珠,说明空气中有 (4)节日里五光十色的霓虹灯内填充的气体是 (5)会污染空气且易形成酸雨的气体为 。
【判断题】(19)成本与可变现净值孰低法中的“成本”,是指存货的实际成本。( )
【单选题】听力原文:W: It's time you got a new television set. This one is $150. M: That's not too bad. I thought it would be more. Q: What does the man think of the price? (10)
A.
It's beyond his means.
C.
It's higher than expected.
【单选题】P 、 Q 是同一直线上相距 6 米 的两点,甲、乙两小车同时从 P 点出发向 Q 点做匀速直线运动,经过 12 秒,甲车到达 Q 点,此时乙车离 Q 点距离大于 2 米 。它们的 s - t 图象分别为如图所示 a 、 b 、 c 三条图线中的两条,则( )
【单选题】It's useless envying others their success.It's time you ________hard.
【单选题】It's time you ______your membership dues.
【简答题】(1)小白鼠在装有空气的密闭容器中可存活一段时间,说明空气中有______. (2)石灰水长期露置在空气中表面会出现白膜,说明空气中有______. (3)夏天盛放冰棒的杯子外壁上面附有一层水珠,说明空气中有______. (4)节日里五光十色的霓虹灯内填充的气体是______. (5)会污染空气且易形成酸雨的气体为______.
【简答题】'You are very selfish. It's time you_____________that you are not the most important person in the world, ' Edgar said to his boss angrily. [A] realize [B] have realized [C] realized [D] would realize
【单选题】甲、乙两小车同时同地同方向做匀速直线运动,它们的 s — t 图像分别如图 2 ( a )和( b )所示。经过 12 秒,两车的位置关系是
【单选题】甲、乙两小车同时同地沿同一直线做匀速运动,它们的 s - t 图象分别如图所示。根据图象分析可知( )