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【单选题】
多项式15a 3 b 2 +5a 2 b-20a 3 b 3 的公因式是（ ）A.
5ab
B.
5a 2 b 2
C.
5a 2 b
D.
5a 2 b 3
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反馈参考答案：
举一反三
【简答题】A) then B) really C) only D) indeed
【多选题】13随着比例尺的改变,一幅图所表示的地面大小会不同,即 ()
A.
例尺分母大，一幅图涉及地面愈小
B.
比例尺分母小，一幅图涉及地面愈大
C.
例尺分母大，一幅图涉及地面愈大
D.
例尺分母小，一幅图涉及地面愈小
【简答题】A．then B．really C．only D．indeed
【简答题】钢筋混凝土结构的优缺点？
【判断题】Indeed, the words failure and success cannot be reasonably applied to a complex, living, changing human being.
A.
正确
B.
错误
【简答题】A．then B．really C．only D．indeed
【单选题】Tough his words mean _____,he doesn't mean _______ indeed.
A.
leaving;to leave
B.
to leave;leaving
C.
leaving;leave
D.
to leaving;leaved
【单选题】One of the most pressing challenges that the United States--and indeed, the world--will face in the next few decades is how to alleviate the growing stress that human activities are placing on the env...
A.
there are many more ways in which humans are hurting the environment.
B.
environmental degradation is continuing unabated.
C.
the total of animal and plant species facing extinction are too numerous to list.
D.
in addition to fish, many other plant and animal species face over-exploitation by humans.
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