Question

To see a young couple loving each other is　　 ；but to see an old couple loving each other is the best sight of all.

　 A. no wonder B. no doubt C. no way D. no problem

Answer 1

 A 考查词组辨析。句意：看见一对年轻人相亲相爱不足为奇，但看到一对老夫妇相亲相爱，却是人间最美丽的景致。no wonder不足为奇。