题目

How far is it ____ here ____ the post office? A.to; to                              B. from; to                  C. from; from                    D. /; to 答案：B直线y=kx+b与直线y=-x+5平行，且过点A（0，-3）．（1）求该直线的函数表达式；（2）该直线可由直线y=-x+5通过怎样的平移得到？