从上表中可知,该公司的销售呈现()
A.不稳定状态
B.稳定状态
C.大幅上升状态
D.逐步上升状态
参考答案:A
When I got back home I saw a message pinned to the door ______“Sorry to miss you; will call later.”
A.reading
B.reads
C.to read
D.read
设函数f(x),g(x)满足f’(x)=g(x),g’(x)=2ex-f(x),且f(0)=0,g(0)=2,求