A:确立经济体制改革目标
B:开发开放上海浦东
C:设立深圳经济特区
D:加入世界贸易组织
△ABC∽△DEF且它们的面积比为94,则周长比是( )
公鸡有美丽的外表和美妙的歌喉,但它却有不足,那就是( )
B: During the first days of the Spring Festival holiday, pollution levels aren't ____ ____ ____ they were last year.