She ______ to the office than she got do
题型：选择题
问题：
She ______ to the office than she got down to writing the report. [ ]
A. has no sooner got
B. had hardly got
C. no sooner got
D. had no sooner got
题型：选择题
下图表示某草原生态系统中能量流动图解，①～④表示相关过程能量流动量。下列有关叙述正确的是
A．①是流入该生态系统的总能量
B．分解者获得的能量最少
C．图中②/①的比值代表草→兔能量传递效率
D．③和④分别属于草和兔同化量的一部分