下列式子是因式分解的是(　　)_刷题宝

题干

下列式子是因式分解的是(　　)

A：x(x-1)=x -1

B：x -x=x(x+1)

C：x +x=x(x+1)

D：x -x=(x+1)(x-1)

上一题下一题 0.0难度选择题更新时间:2019-03-29 07:59:38

答案(点此获取答案解析）

C

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根据短文理解, 从A、B、C、D四个选项中选择正确答案填空。

Mr. Smith 1 from London. Now he is in China. He is 2. He teaches 3 a middle school. He works very hard. His students like 4 very much. He can 5 a little Chinese. His students often teaches him Chinese 6 Sundays. Mr. Smith likes playing football. He often plays football 7 his students.

Mr. Smith 8 a son. His name is Jack. He is student. He studies in a middle school. He goes to school 9 bike everyday. He gets back home at four in the afternoon. He likes 10 TV in the evening.

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①树立正确的就业观念，诚实辛勤劳动

②加强学习，提高自身的技能和素质

③将自主创业作为就业的主要渠道

④自主择业，主要依据自身兴趣选择职业

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播种一种观念就收获一种行为，播种一种行为就收获一种习惯，播种一种习惯就收获一种命运。要改变命运，就要先改变行为，要改变行为，先要改变思想、解放思想。这是因为( )

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有关下列几种动物的叙述，错误的是（　　）

同类题5

选择正确的解释。

绾： A．把长条形的东西盘起来打成结 B．卷

①山洪过后，人们过河必须脱鞋绾裤。____

②妈妈留了一头的长发，每天干活的时候她就把头发绾起来。____

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