看一看，选一选。

A. Last year ,she went to Qingdao and visited her friend.

B. Last year,he went to Dalian and played football.

C. Last year,he went to Haikou and swam in the sea.

D. Last week,he went to the Summer Palace and rowed boats.

E. Last Sunday,she went to the Great Wall and took photos.

G. I visited my grandfather and grandmother last month.

锅炉一级过热器泄漏的现象及处理方法。