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（70-72题共用题干） 第70题：
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皮皮学刷刷变学霸
举一反三
【简答题】What does the writer mean by saying that college is “a different ball ”?
【多选题】选用配合比时,除应考虑混合料的强度外,还应考虑材料的 ( )、( )、( )等因素,通过必要的试验,以选择技术经济上合理的配合比
A.
来源
B.
备料
C.
材料
D.
施工
【单选题】What is the best definition of the phrase 'a game of two halves'?
A.
A different ball should be used in each half of the match.
B.
Anything can happen in football.
C.
Players shouldn't argue with the referee.
D.
Each team should use its own ball for part of the match.
【单选题】After class my friend, Jason, ____ different ball games at school. [ ]
A.
plays a part
B.
takes an active part in
C.
is actively in
D.
joins
【单选题】Ground ball is ______.
A.
a different way of playing baseball.
B.
invented by Philadelphia' s Overbrook School.
C.
the most elementary thing for athletes.
D.
a new sport enjoyed by all Americans.
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