()
B
Idon'tknowhowwecanmake________onthetimetableforanymorecourses.
设函数y=y(x)由参数方程
ItwasthreeBritishsportsmenwho________banneddrugs.
设平面区域,则D绕y轴旋转所成旋转体体积为_____
设数列收敛,则()