—Yes, she is. She can play the guitar almost her guitar teacher.
A:as better as
B:as good as
C:as well as
D:so well as
The chair is under the desk.
如图所示为一质点运动的位移随时间变化的图象,图象是一条抛物线,方程为x=﹣5t2+40t,下列说法错误的是( )
辨析词义,选词填空。
①树木将从空气中____(摄取 获取 捕获)的二氧化碳以葡萄糖的形式保存起来。
②光合作用对氧气____(循环 交换 交流)极为重要。
③生命将再次受到____(严峻 险峻 严肃)的考验。