We always pay attention to the weather because it ________us so directly what we wear,what we do and even how we feel.
A:benefits
B:affects
C:concludes
D:attracts
从莫斯科回来的小明,在描述其次见闻时,有一句话是在撒谎,请找出是下列哪一句( )
关于x的一元二次方程x2+3x﹣m=0有两个不相等的实数根,则实数m的取值范围是____
若3am+2b4与﹣a5bn﹣1的和仍是一个单项式,则m+n=____.