Music

    Opera at Music Hall:1243 Elm Street.The season runs June through August,with additional performances in March and September.The Opera honors Enjoy tho Arts membership discounts.Phone:241-2742.http://www.cityopera.com.

    Chamber Orchestra:The Orchestra plays at Memorial Hall at 1406 Elm Street,which offers several concerts from March through June.Call 723-1182 for more information.http://www.chamberorch.com.

    Symphony Orchestra:At Music Hall and Riverbend.For ticket sales,call 381-3300.Regular season runs September through May at Music Hall in summer at Riverbend.http://www.symphony.org/home.asp.

    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 ban attend the events for free. A free schedule of events for each term is available by calling the box office at 556-4183.http://www.ccm.uc.edu/events/calendar.

    Riverbend Music Theater:6295 Kellogg Ave.Large outdoor theater with the closest seats under cover (price difference).Big name shows all summer long.Phone:202-6220. http://www.riverbendmusic.com.

2014年1月22-25日，第     届世界经济论坛年会在瑞士小镇达沃斯举行。（    ）

在同一坐标系中，将曲线$y=2\sin 3x$变为曲线$y=\sin x$的伸缩变换是（   ）