题干
You ________ all right now if you ________ to the doctor then.
A：would be；had listened
B：would have been；had listened
C：would be；listened
D：would have been；listened
答案(点此获取答案解析）
A
的图像上所有的点向右平行移动
个单位长度，再把所得各点的横坐