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【简答题】
在探究“阻力对物体运动的影响”的实验中,如图所示. (1)让同小车从斜面上同一位置由静止开始下滑,目的是 使小车到达水平面时小车的 相同 . (2)实验中改变小车所受阻力大小,是通过改变 水平面的 来实现的. (3)实验中同一小车在木板表面上运动的距离最长,表明它在该表面受到的阻力最 小 . (4)假设水平面绝对光滑,小车不受任何阻力,则它会在水平面上做 运动 运动. (5)牛顿第一定律告诉了我们物体的运动 (选填“需要”或“不需要”)维持,一切物体都有保持原来 不变的性质.
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【单选题】Jason doesn’t have any lines.
A.
Jason speaks a lot in the commercial.
B.
Jason doesn’t speak a word in the commercial.
C.
Jason is foolish.
D.
Jason is not foolish.
【简答题】The teacher doesn’t permit ________ in class. A) smoke B) to smoke C) smoking D) to have a smoke
【单选题】Q:What is the actual reason that Katy doesn’t want to attend Jason’s party?
A.
None of her friends likes Jason.
B.
None of Jason’s guests is young.
C.
She wants to go to Linda’s party.
D.
She went to Jason’s party last year.
【单选题】A 'Workaholic' works too much and usually forgets to have meals and go to bed. _____, he doesn't have good health. [ ]
A.
As a matter of fact
B.
As a whole
C.
As a result
D.
AS a rule
【单选题】What is the actual reason that Katy doesn't want to attend Jason's party?
A.
None of her friends likes Jason.
B.
None of Jason's guests is young.
C.
She wants to go to Linda's party.
D.
She went to Jason's party last year.
【简答题】The author doesn’t seem to believe ________. A) children will be on time if they have learnt how to tell time B) a Flik Flak can help parents teach their children how to tell time C) the Flik Flak can...
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