Coach Ferreira says: "At the start of this season, our club bought lighter basketballs for the under-11 team. Since then, our players have scored with far more of their shots in games than they did last season. The lighter balls must be the reason."
Which one of these statements, if true, most weakens Coach Ferreira's argument?
答案: A
答案:A(同一时间球框也降低了)
- 教练的证据是:本赛季队员投篮命中的比例高了很多。她的结论是:这是更轻的篮球带来的。
- 这个推理要成立,前提是没有其他让投篮变容易的变化。
- 如果赛季开始时联赛同时降低了球框高度,那么即使还用旧球,投篮也会更容易命中。这给出了另一个解释,所以最能削弱教练的论点。
为什么其他选项不对
- B:其他俱乐部买了什么球,不能说明这支球队为什么命中率提高了。
- C:喜欢旧球是手感上的偏好,和投进多少球无关。
- D:球的价格不会影响队员的投篮水平。

