有关日本农业的叙述，错误的是（    ）。                         

从方框内选择恰当的句子完成对话。
A: Hello! May I speak to Jim?
B: I'm sorry.____I think he'll be back in an hour.____
A: That's very kind of you. I'd like to invite him to watch a football match with me____ 
B: OK. ____I'll go and get a pen and a piece of paper. OK. Please give me your phone number.
A: 5697846．My name is Su Lei.
B: All right.____

科学研究表明：绿原酸具有抗菌、抗病毒、增高白血球、保肝利胆、抗肿瘤、降血脂、清除自由基和兴奋中枢神经系统等作用，被誉为“第七营养素”， 它可以从忍冬科植物中提取，化学式为C₁₆H₁₈O₉。由此可知，绿原酸由____种元素组成；一个绿原酸分子由____个原子构成；绿原酸中H、O元素的质量比是____。