多项选择题 群体的运作需要一定的群体规范，其中必不可少的是（）。

多项选择题 团体作业中有几种现象需要加以注意，即（）。

单项选择题 Around City The Arts Sports Opera & Ballet Movies BASEBALL CarmenGHOST New York Mets vs Montreal At the Metropolitan Opera HouseDemi Moore, Patrick Swayze and Expo 7: 30 p. m. Whoopie Goldberg 3 : 00 p. m. at Shea Stadium Swan LakeThe Romance of the decade American Ballet Theater6: 45 p. m. Charity Tennis 7: 30 p. m. Pretty Woman This year's Wimbledon winnersJulia Roberts, Richard Gere. play to raise money for disabled ConcertsA real Cinderella story children. Philadelphia Symphony7: 45 p. m. 1p. m. -7 p. m. Orchestra at Lincoln Center. 8: 00 p. m.Where does the advertisement possibly come from?A．A bookB．A newspaperC．TV programD．Broadcasting