青藏地区人民主要的传统服饰是藏袍，这主要是因为（　　）

肝癌是危害我国人民健康的重大疾病。某科学研究小组通过深度测序技术对肝癌进行组学分析，发现人体内一种名为microRNA-199的基因，其表达高低与肝癌患者预后密切相关，并证明它能够靶向抑制促肝癌激酶分子PAK4，从而显著抑制肝癌生长。该发现将为肝癌生物治疗提供新方法。这说明（    ）

①事物之间相互影响相互作用，构成了事物的变化和发展

②离开了事物的真实联系，主观能动性就不能发挥作用

③人为事物的联系是建立在人类正确认识基础之上的

④认识事物的本质联系，能引导事物朝有利方向转化

根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    My family spent a few weeks in London last year. We went there in autumn. We think it is the 1 season to visit England. The weather is usually quite good and there are not too many travelers in 2.

    We stayed in a small  3 in the West End. We did most of our sightseeing on foot. We went to look at the places which all travelers would like to 4. We went shopping and spent too much money 5 a lot of things what we liked most was going to the theatres. We didn't have the chance to see such 6 plays at home. A lot of people say English 7 is not so good. We didn't think so. It is true that most of the restaurants are French, Italian or Chinese, but Britain has some very 8 meals.

     In fact, we 9 our holiday so much that we have already decided to 10 there again this year. But we are going to take our umbrellas. I'm sure we'll need them sometimes. It is a really good place to visit.