A:one
B:that
C:what
D:the one
设函数f(x)=3|x﹣1|﹣2x+a,g(x)=2﹣x2,若在区间(0,3)上,f(x)的图象在g(x)的图象的上方,则实数a的取值范围为( )
如图表示生态系统中植物、动物、微生物三者之间的关系,据图回答(1)—(2)题.
The workers were made from morning to night in the past.