某资产可以持续使用,年收益额为50万元,适用本金化率为20%,则其评估值为( )万元。
A.200
B.250
C.300
D.350
参考答案:B
The world’s population is getting larger and larger, so scientists are trying to ______ new ways to solve the food shortage.
A.keep up with
B.come up with
C.make up with
D.catch up with
生物代谢的原料不包括()。
A、二氧化碳
B、氧化铁
C、水
D、氧气