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【多选题】
如图甲所示,一质量为 M 的薄木板 ( 厚度不计 ) 静止在光滑水平地面上,现有一质量为 m 的滑块以一定的水平初速度 v 0 ,从木板的左端开始向木板的右端滑行,滑块和木板的水平速度大小随时间变化的情况如图乙所示,根据图象可知以下判断正确的是 ( )A.
滑块始终与木板存在相对运动
B.
滑块未能滑出木板
C.
滑块的质量 m 大于木板的质量 M
D.
在 t 1 时刻,滑块从木板上滑出
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举一反三
【单选题】Perhaps the famous football star won’t play__________ football any longer.
A.
/
B.
a
C.
an
D.
the
【判断题】The Boston Red Sox is the famous football team and won the Super Bowl. ( )
A.
正确
B.
错误
【单选题】It is said that the famous football star is now willing to play for______ would pay him three million dollars a year.
A.
anyone
B.
whomever
C.
no matter who
D.
whoever
【单选题】Shall we the famous football player to join our club?
A.
provide
B.
offer
C.
invite
D.
award
【单选题】Perhaps the famous football player won't play ____ football any longer.
A.
a
B.
an
C.
the
D.
/
【单选题】It is said that the famous football star is now willing to play for_____ would pay him three million dollars a year.
A.
anyone
B.
whomever
C.
no matter who
D.
Whoever
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