Dormitories range from two to six stories in height. If a dormitory room is abov

游客2024-01-13  4

问题 Dormitories range from two to six stories in height. If a dormitory room is above the second floor, it has a fire escape. If the statements above are true, which of the following must also be true?

选项 A、Second-floor dormitory rooms do not have fire escapes.
B、Third-floor dormitory rooms do not have fire escapes.
C、Only dormitory rooms above the second floor have fire escapes.
D、Fourth-floor dormitory rooms have fire escapes.
E、Some two-story dormitories do not have fire escapes.

答案 D

解析 归纳题要关注条件句。用A表示三层或三层以上的宿舍,用B表示有安全通道,那么段落推理为A→B。(A)为否命题;(B)为A→B;(C)中的绝对化语言“only”在上文中没有出现;(E)中的关于二层宿舍楼的信息在上文中没有出现,因此也不对;(D)正好符合命题A→B, 所以(D)为正确答案。
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