A new iPhone costs about ________ of a second-hand one.

材料一：《中国青年报》披露，北方某大城市的一项专题调查表明，在校学生中50％有过被校内外不法分子敲诈、勒索、抢劫、搜身、欺侮及其他滋扰的经历。当这些学生遇到侵害时，感到气愤，但惊惶失措，紧张害怕，自认倒霉，很少报案或告诉家长、老师。

材料二：自2001年9月以来，河南平舆县犯罪嫌疑人黄勇以家中有好玩的游戏为由，用诱骗手段，将受害人从录相厅、网吧、游戏厅等场所骗至家中，先后杀死青少年17人，杀伤1人，并将死者尸体掩埋在自家室内、院内。 

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.