题目

Don’t be discouraged. Take things       they are and you will enjoy every day of your life. A. where               B. as                  C. when                D. since 答案：B把方程x+1=4y+x3化为y=kx+b的形式，正确的是（　　）A．y=13x+1B．y=16x+14C．y=16x+1D．y=13x+14