要设置网页在黑色背景下显示白色文字，应使用body（）语句。
参考答案：bgcolor=blacktext=write
已知函数f(x)＝mx2＋x＋m＋2在(－∞，2)上是增函数，则实数m的取值范围是________．
The couple don't generally give in to each other, so they ________ when they are together. [ ]
A. have quarreled
B. are always quarreling
C. had quarreled
D. have been quarreling
