— Sorry, I didn't pass the exam, and then what should I do?
—I think perhaps you should be careful next time.
A:instead
B:almost
C:maybe
读“北半球某陆地局部图”,图中X、Y为等高线(等高距为100米),L为河流,对角线为经线。据此回答
国际单位制由基本单位和导出单位组成,下列物理单位属于基本单位的是( )
已知命题P:“对∀x∈R,∃m∈R,使4x﹣2x+1+m=0”,若命题¬P是假命题,则实数m的取值范围是____