1
曲線y=|x|與直線y=2所圍成的平面圖形的面積為()
Iwishyou________likethat.
ComradeLi________beinBeijingbecauseIsawhimintownonlyafewminutesago.
設函數f(x)=ln(3x),則 f'(2)=()
Thisdiploma(畢業文憑)________thatyouhavecompletedhighschool.