为明显覆被花相植物是（）
A.栾树
B.山茶
C.含笑
D.油桐
参考答案：A
It was ________ Asimov was eleven years old ________ his talent for writing became obvious.[ ]
A．because; that
B．when; that
C．why; when
D．until; when
在存货成本逐渐上涨的前提下，采用后进先出法的后果是 （）
A、销售成本低，存货成本高
B、销售成本高，存货成本低
C、销售成本和存货成本都高
D、销售成本和存货成本都低
