题目

Welcome to our school library. The library is open from 8:00 a.m. to 5:00 p.m. from Monday to Friday. On Saturday, it is open from 9:00 a.m. to 3:00 p.m. It is closed on Sunday. You can borrow (借) books, magazines and CDs here. You can borrow three books at a time. You can keep them for two weeks. If you want to keep them longer, you must come and renew (续借) them. Don’t forget to return them on time. The library is a quiet place. Please keep quiet when you are in the library.How long is the library open on Wednesday?A 8 hoursB 9 hours

Welcome to our school library. The library is open from 8:00 a.m. to 5:00 p.m. from Monday to Friday. On Saturday, it is open from 9:00 a.m. to 3:00 p.m. It is closed on Sunday. You can borrow (借) books, magazines and CDs here. You can borrow three books at a time. You can keep them for two weeks. If you want to keep them longer, you must come and renew (续借) them. Don’t forget to return them on time. The library is a quiet place. Please keep quiet when you are in the library.

How long is the library open on Wednesday?

A 8 hours

B 9 hours

题目解答

答案

根据文章内容，图书馆开放时间按日期分类如下：

  • 周一至周五：8:00 a.m. 至 5:00 p.m.
  • 周六：9:00 a.m. 至 3:00 p.m.
  • 周日：关闭

周三属于“周一至周五”范围，因此适用第一种开放时段。

计算开放时长：
$5:00\ \text{p.m.} - 8:00\ \text{a.m.} = 9\ \text{小时}$

故周三图书馆开放时间为 9 小时。

答案：B. 9 hours

解析

本题考查对文章中时间信息的提取和简单的时间计算能力。解题思路是先从文章中确定周三图书馆的开放时间范围，再通过计算开放结束时间与开始时间的差值，得出开放时长，最后与选项进行对比得出答案。

  1. 从文章 “The library is open from 8:00 a.m. to 5:00 p.m. from Monday to Friday.” 可知，周一至周五图书馆开放时间是上午 8 点到下午 5 点，而周三属于周一至周五这个范围，所以周三图书馆开放时间同样是从上午 8 点到下午 5 点。
  2. 计算开放时长，用开放结束时间减去开放开始时间，即：
    • 下午 5 点用 24 小时制表示为 17 时，上午 8 点用 24 小时制表示为 8 时。
    • 根据公式：开放时长$=$结束时间$-$开始时间，可得开放时长为$17 - 8 = 9$（小时）。
  3. 对比选项，A 选项为 8 小时，B 选项为 9 小时，计算得出的开放时长为 9 小时，所以正确答案是 B 选项。