题干

下列结论中错误的是(    )

A:四边形的内角和等于它的外角和

B:点P(-2,-3)向左平移1个单位,再向上平移3个单位,则所得到的点的坐标为(-3,0)

C:方程x2+x-2=0的两根之积是-2

D:函数y= x−3 的自变量x的取值范围是x>3

上一题 下一题 0.0难度 选择题 更新时间:2019-08-22 02:39:15

答案(点此获取答案解析)

D

同类题2

阅读下面文段后按要求答题。
                                                                                                                                 读(节选)  
                                                                                               人之一生.读之一生    读海,胸怀将变得辽阔
                                                                                               从春读到夏,从小读到大  读月,方知阴晴圆缺
                                                                                               读雨,方知万物可以滋润,心灵能够洗涤    

                                                                                               读日,便不再惋惜日近黄昏
                                                                                               读雪,能领悟到嚣的纯洁,感受到冬的春意             用心品读,细细感悟
                                                                                                读风,就能触摸d4)11的脉搏,聆听天地的呼吸      阴雨中能读出晴空
                                                                                               读霞,才能于苍茫中发现辉煌,展示自己韵不屈     枯黄中能读出翠绿
                                                                                               读花,你学会倾听     沙漠中能读出清泉
                                                                                               读树,你学套成长       黑暗中能读出晨曦
                                                                                               读山,你学会攀登                                     

                                                                                                                                                                                                                                          (诗歌有删改)