[解析]
(1)细节理解题。根据第二段All you have to do is to share your favorite memory from Photoshop World with us on Instagram.(你所要做的就是在Instagram上与我们分享你最喜欢的Photoshop世界记忆。)可知应该分享对Photoshop World的记忆才能参加比赛。故选B。
(2)细节理解题。根据How do you enter?部分※The post must be made after 12:00 p.m.on July 8 and before 11:59 p.m.on July 28,otherwise it will be counted as an invalid(无效的) entry.(※邮件必须在7月8日中午12点之后至7月28日晚上11点59分之前投寄,否则将被视为无效邮件。)可知7月8日上午10点上传的帖子将被视为无效参赛作品。故选B。
(3)推理判断题。根据最后一段We've got 20 world﹣class instructors coming to each show to tell their best tips and tricks to anyone looking to apply themselves to the photography(摄影) world.With over 100 classes and live shoots,there's a little something for everyone!(我们有20位世界级的教练来参加每个展览,向任何想要投身于摄影世界的人讲述他们最好的技巧和技巧。有超过100个课程和现场拍摄,每个人都有一点东西!)可知Photoshop World最有可能是一个摄影活动。故选A。