—John, thank you for driving me home. —_________. See you tomorrow.
A:That's right
B:I'm afraid not
C:You're welcome
D:It's a good idea
如今视力不好的同学越来越多,小华的姐姐视物时成像情况如图所示,医生向她介
绍激光手术通过激光烧蚀厚度均匀的透明眼角膜,使之改变形状,实现视力矫正。手术后的眼角膜形状应为下列图中的( )
读图,回答下题.