A:0
B:1
C:2
D:3
—How can we help the children in the mountain village?
—We can ____ leaflets to ask people to donate money.
100多年前,凯巴森林主要由松树、冷杉和云杉等乔木构成,还生长着许多草本植物.另外,森林中还生活着黑尾鹿等动物.美洲狮、狼和郊狼靠捕食黑尾鹿充饥.请分析回答:
解分式方程:3x2-9﹣x3-x=1.