已知直线y=kx+b经过点（1，2）和点（-1，4），求这条直线的解析式。
解：y=-x+3。
– Alice, you are the winner of the English speech contest.
– _____. Spoken English is the weakest for me.
A．Sound great
B．I think so
C．Of course not
D．You are kidding
有人根据自富阳至桐庐一百许里“异水”的特点拟写了一副对联的上联：水清现游鱼。请你根据“奇山”的特点对出下联。
上联：水清现游鱼 下联：______________________________
