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【判断题】
同一个栈内的各个数据元素类型可以不一致。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】_____he gave that we should take more exercise in our spare time!
A.
What a good advice
B.
How a good advice
C.
What good advice
D.
How good advice
【单选题】We should spare no effort to_____ our environment.
A.
beauty
B.
beautify
C.
beautiful
D.
beautifully
【单选题】_____, we should not leave the lab although it might occupy a bit of our spare-time.
A.
Not to finish our work
B.
We having not finished our work
C.
Our work not being finished
D.
We without finishing our work
【单选题】The author proposes that we should______.
A.
spare no efforts to increase life expectancy
B.
be aware of the rapid graying of our society
C.
apply science and technology in everyday life
D.
try our best to improve the lives of old people
【单选题】Our money is limited, so I think that we should _______ for the next year.
A.
save
B.
spare
C.
benefit
D.
budget
【简答题】We should spare no effort to (beauty)_______our environment.
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