找出下列作品、作者与出处搭配有误的一项(     )

小明同学上初中后患上了近视眼，使远处物体的像落在视网膜____ （选填“前”或“后”）而看不清远处物体。现在有一种治疗手术，采用激光对角膜进行处理，使晶状体和角膜构成的透镜对光的偏折能力变得____ （选填“强”或“弱”）些。

如图所示，将长方形ABCD的纸片沿EF折叠，点D、C分别落在点D′、C′处，若∠AED′=50°，则∠EFB的度数为____．

阅读下列短文，从每题所给的A、B、C和D项中，选出最佳选项。

                                                                              Musicians wanted

      We want four good musicians for our rock band(摇滚乐队). Are you a musician? Can you sing? Can you play the piano, the guitar or the drums? Do you want to be the best musician? If you want to join us, please send(发送) an e-mail. Our e-mail address is rockband2009 @pep.com.cn. Or you can call Mr. Liu at 790-4566.

                                                                             Teachers needed

      Are you an art te acher? Can you paint (绘画) or draw well? Are you good with kids? We need two teachers for our art club. Please find Mrs Wang for more information(信息) or call 628-1183.