21. Which number should you call if you want to see an opera?
- A. 241-2742.
- B. 723-1182.
- C. 381-3300.
- D. 232-6220.
答案：A
答案句：Opera at Music Hall: 1243 Elm Street. The season runs June through August, with additional performances in March and September. The Opera honors Enjoy the Arts membership discounts. Phone: 241-2742.
参考译文：音乐厅歌剧：榆树街1243号。演出季从六月持续到八月，三月和九月还有额外演出。歌剧演出享受“享受艺术”会员折扣。电话：241-2742。
定位线索：题干“see an opera”→答案句“Opera at Music Hall”；文中“Phone: 241-2742”对应选项A“241-2742”。
解析：题干问想看歌剧应拨打哪个电话，答案句直接提到“Opera at Music Hall”并给出“Phone: 241-2742”，因此选A。选项B是室内乐团的电话，C是交响乐团的电话，D是河湾音乐剧院的电话，均与歌剧无关，属于张冠李戴。
22. When can you go to a concert by Chamber Orchestra?
- A. February.
- B. May.
- C. August.
- D. November.
答案：B
答案句：Chamber Orchestra: The Orchestra plays at Memorial Hall at 1406 Elm Street, which offers several concerts from March through June.
参考译文：室内乐团：乐团在榆树街1406号的纪念堂演出，从三月到六月举办多场音乐会。
定位线索：题干“Chamber Orchestra”→答案句“Chamber Orchestra”；文中“March through June”对应选项B“May”（五月在三月到六月范围内）。
解析：题干问室内乐团音乐会的时间，答案句明确说“from March through June”，五月在此范围内，因此选B。选项A二月、C八月、D十一月均不在三月到六月之间，属于范围扩大或时间不符。
23. Where can students go for free performances with their I.D. cards?
- A. Music Hall.
- B. Memorial Hall.
- C. Patricia Cobbett Theater.
- D. Riverbend Music Theater.
答案：C
答案句：College Conservatory of Music (CCM): Performances are on the main campus (校园) of the university, usually at Patricia Cobbett Theater. CCM organizes a variety of events, including performances by the well-known LaSalle Quartet, CCM’s Philharmonic Orchestra, and various groups of musicians presenting Baroque through modern music. Students with I.D. cards can attend the events for free.
参考译文：音乐学院（CCM）：演出在大学主校区进行，通常在帕特里夏·科贝特剧院。CCM组织各种活动，包括著名拉萨尔四重奏、CCM爱乐乐团以及演奏从巴洛克到现代音乐的各种音乐家团体的演出。持学生证的学生可以免费参加这些活动。
定位线索：题干“students”“free”“I.D. cards”→答案句“Students with I.D. cards can attend the events for free”；文中“Patricia Cobbett Theater”对应选项C“Patricia Cobbett Theater”。
解析：题干问学生凭学生证可免费观看演出的地点，答案句明确说“Students with I.D. cards can attend the events for free”，且前文指出演出地点“usually at Patricia Cobbett Theater”，因此选C。选项A音乐厅、B纪念堂、D河湾音乐剧院均未提及学生免费政策，属于无中生有。
24. How is Riverbend Music Theater different from the other places?
- A. It has seats in the open air.
- B. It gives shows all year round.
- C. It offers membership discounts.
- D. It presents famous musical works.
答案：A
答案句：Riverbend Music Theater: 6295 Kellogg Ave. Large outdoor theater with the closest seats under cover (price difference). Big name shows all summer long!
参考译文：河湾音乐剧院：凯洛格大道6295号。大型户外剧院，最近的座位有遮盖（价格不同）。整个夏天都有大牌演出！
定位线索：题干“Riverbend Music Theater”“different from other places”→答案句“Large outdoor theater”；文中“outdoor”对应选项A“seats in the open air”。
解析：题干问河湾音乐剧院与其他地方的不同之处，答案句明确说它是“Large outdoor theater”，即户外剧院，因此选A“有露天座位”。选项B“全年演出”与文中“all summer long”不符，属于范围扩大；选项C“会员折扣”是歌剧院的特征，选项D“著名音乐作品”未提及，均属于无中生有。