某人进行了二小时的中等强度运动，此时，体内的变化是（）

根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    I'm Maria's mother. She is going to Britain next month. As you know, she'll be 1 with a family for two weeks. Now the most important thing is 2. She should take about £30 in cash and about £200 in traveler's checks (支票）.Then I have to tell her something 3.

    When you 4 at the airport, our host family will meet you there. You must remember to wear a red shirt so that the family will find you 5. I've told them to look out for the 6 shirt. You'll also need to 7 with you 4 photos of yourself and, of course, it's very important that you take the school 8. While you are there, if you have any problem, you can 9 our agent. I'll give you her office phone number now: It's 580-4436 and the person to ask for is Mrs. Belcher, that's B-E-L-C-H-E-R. She's in the 10 from 9 a.m. to 5 p.m. every day. OK! That's everything. Have a good trip.

阅读下面的古诗，回答问题。
                                                                                               南园十三首（其五）
                                                                                                       李 贺
                                          男儿何不带吴钩^①，收取关山五十州^②？请君暂上凌烟阁^③，若个^④书生万户侯？
          【注】①吴钩：刀名，刃弯。 ②关山五十州：指当时藩镇割据、中央不能掌管的地区。《通鉴•唐纪》 载唐宪宗元和七年李绛云：“今法令所不能制者， 河南北五十余州。” ③凌烟阁：在长安。唐太宗贞观十七年(643)年画开国功臣二十四人于凌烟阁。④若个：哪个。