【单选题】
He’s [填空]young to go to school
【单选题】
The manager booked a magic show [填空] Saturday night.
【单选题】
Anyone who[填空] questions to ask, please come to my office this afternoon.
【单选题】
Is he the man [填空]sells eggs?
【单选题】
He’s leaving for?Hong Kong?and he’ll stay?[填空]?for two weeks.
【单选题】
The staircase leads[填空]the balcony.
【单选题】
根据积分中值定理可知曲线y=x2在区间[0,2]上的平均值( )
【单选题】
函数f(x)=2x^3-6x^2-18x-7的拐点为( )