先通读下面的短文，掌握其大意，然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案.

Dear Grandmother and Grandfather,

    How's it going? Last Sunday I went to Long Bay with my1．We got up at 6：30 in the morning．We ate breakfast at 7：00，2then we left for Long Bay．My father is a good driver and he3fast．But I have to say, the trip was a little4．When we got there,5was already(已经)ten o'clock.

    Frist we swam and played balls in the water6 over an hour. After that，we ate a big lunch in a restaurant．In the afternoon my mother and I7the sunshine on the beach．My father went8．He didn't get any fish．but it was9．Soon it was time to go home.My parents and I10Long Bay．What a great day we had!

    I will visit you with my parents this weekend．I miss you very much．

    Kate

材料一：机器制造一事，为今日御侮之资，自强之本。……洋机器于耕织、刷印、陶埴、诸器皆能制造，有裨民生日用，原不专为军火而设。

——李鸿章《置办外国铁厂机器折》（1865年）

材料二：窃闻东西各国之强，皆以立宪法开国会之故。国会者，君与民共议一国之政法也。立行宪法，大开国会以庶政与国民共之，则中国之治强计日可待也。

——康有为《请定立宪开国会折》

材料三：我们现在认定只有德先生（Democracy）和赛先生（Science）这两位先生可以救治中国政治上．道德上．学术上．思想上一切的黑暗。

——陈独秀

某中学开展“关爱母亲河”综合实践活动。活动小组通过数据分析、实地考察、活动总结等活动，对黄土高原的水土流失问题进行调查研究。