题目

Tom: Sandy. It seems that only half of the students passed the final exam. Sandy: Really? The exam    44.have been very difficult this time. Tom: Well, I’m really  45.(surprise) too. There are many students who definitely didn’t fail. According to Jack, there are eight boys in his class who failed,   46.(include) himself and Scott. Sandy: Oh! Scott is  47.of the top students in the college. What about his sister, Kate? Did she pass? Tom: Oh, yes. It seems she   48.(get) good marks. Sandy: That’s   49.(absolute) unbelievable. ! Scott was   50.much better student than 某市举行数学竞赛，比赛前规定，前15名可以获奖，比赛结果第一名1人；第二名并列2人；第三名并列3人；……；第十五名并列15人。用最简便方法计算出得奖的一共有多少人?