I don't like to sit ___ Tom's right. I would like to sit ___ the back row. [ ]

A. on; in

B. in; on

C. on; at

D. at; on

（山东省平邑一中2009届高三元旦竞赛35题）科技成果改善人们的生活，我们今天在日常生活中仍然利用的第二次科技革命的成果是

哪一项

A                  B                            C                D