Question 18 is based on the passage you have just heard.

Passage One

    In college, time is scarce, and consequently, very precious. At the same time, expenses in college pile up surprisingly quickly. A part-time job is a good way to balance costs while ensuring there is enough time left over for both academic subjects and after-class activities. If you are a college student looking for a part-time job, the best place to start your job search is right on campus. （16）There are tons of on-campus job opportunities, and as a student, you’ll automatically be given hiring priority. Plus, on-campus jobs eliminate commuting time, and could be a great way to connect with academic and professional resources at your university. （17）Check with your school’s careers service or employment office for help to find a campus job. Of course, there are opportunities for part-time work off-campus, too. If you spend a little time digging for the right part-time jobs, you’ll save yourself time when you find a job that leaves you with enough time to get your school work done, too. If you are a college student looking for work but worry you won’t have enough time to devote to academic subjects, consider working as a study hall or library monitor. （18）Responsibilities generally include supervising study spaces to ensure that a quiet atmosphere is maintained. It’s a pretty easy job, but one with lots of downtime—which means you’ll have plenty of time to catch up on reading, do homework or study for an exam.

What does the speaker say is a library monitor’s responsibility?

该题目为细节题。问题是：对话者认为，什么是图书管理员的责任？出题点位置在问题关键词“responsibility”处。根据原文“Responsibilities generally include supervising study spaces to ensure that a quiet atmosphere is maintained”，责任通常包括监测学习环境来确保营造安静的氛围。选项C） Supervising study spaces to ensure a quiet atmosphere，该内容与关键词完全一致，属于原文再现。因此，正确选项为 C。