语法填空：（共10小题，每小题1分，满分10分）

Nowadays, quite a lot of parents are in a dilemma(窘境). On the one hand, they want to provide 小题1:___________(comfort) living and learning conditions for their children. On the other hand, 小题2:__________ worries them is that too cozy(舒服的) conditions might lead to spoiled children 小题3:___________ good qualities like perseverance(毅力), determination, and so on.

I firmly believe that hard life is good for children. Children from poor families are usually independent and have a strong will. Hard life makes them understand that their future lies in their own 小题4:___________. They are grateful to whatever 小题5:__________(give) to them by their parents. They 小题6:___________ complain because they know complaints can only result in disappointment. 小题7:___________, most of them are determined to change their present situation through hard work.

So I 小题8:___________(strong) recommend that parents should create 小题9:___________ for children to experience hard life, thus letting them realize the 小题10:___________ of valuing the present life and make good use of every minute to be prepared for the future.

郑和七次下西洋前后共（）年。

A.27年

B.28年

C.29年