⑴Do you like pears?____             A. I can see twelve.

⑵Where are you from?____          B. No, I don't.

⑶How many cars can you see?____   C. He's my father.

⑷Is it on your desk?____             D. I'm from Canada.

⑸Who is that man?____              E. Yes, it is.

分式方程$\frac{1}{x+1}=\frac{2}{x}$的根是 ____．