A:only
B:especially
C:immediately
D:finally
水是生命之源,干旱会使农作物大量减产或绝收,因为水是光合作用的原料之一,光合作用的另一个原料是
Larry, we're glad you have arrived. We ______ to drive to the station to meet you.
将二次函数y=x2﹣2x化为y=(x﹣h)2+k的形式,结果为( )