鲁利亚把脑分成多个互相紧密联系的机能系统，包括
A、动力系统ABD
暂无解析
证明方程xxx1nn-1+n1的整数，在区间1,12内有且仅有一个实根；(II)记(I)中的实根为xn，证明limnnx存在，并求此极限
GeneralMotors,oneoftheworld'slargestautomanufacturers,isexpandingits________inthiscountry.
设函数y=sinx^2+2x，求dy.
Theaddressbook________theemailaddressesofyourfriendsorgroupsofcolleagues.
Humanbehaviorismostlyaproductoflearning________thebehaviorofanimalsdependsmainlyoninstinct.
