The engine has broken and the boat is ______ on the water.
For the new country to survive, ________ for its people to enjoy prosperity, new economic policies will be required.
设曲线 L:f(x,y)=1(f(x,y) 具有一阶连续偏导数 ) ,过第II 象限内的点M和第IV象限内的点N,T为L上从点M到点N的一段弧,则下列小于零的是()
She got a job as an assistant stage manager at the Cambridge Arts Festival Theatre, thinkingthat it might ________ to a career as a playwright ( 剧作家 ).