单项选择题
将某植物的叶肉细胞放在含低浓度NaHCO3的培养液中,并用石蜡油覆盖液面。先照光一段时间,然后在相同光照强度下不同时间测定叶肉细胞的光合作用强度。下列示意图中能正确反映测定时间与光合作用强度关系的是().
A.A B.B C.C D.D
A.You must have wronged me. B.Oh! I’m so sorry about this. C.Please stop just a second. D.Are you Mr. Smith E.But may I ask you something first F.Is there anything I can do for you G.Now, sit down please.