— You must get excited about going to France to study oil painting.

— ________, but I'm afraid I can't do well because my French is too poor. [ ]

A. I don't know yet  

B. Certainly not

C. Well, I ought to have 

D. All right

区别血尿与血红蛋白尿的主要方法是（）

A.观察血尿颜色

B.做尿胆原测验

C.做尿隐血试验

D.做尿三杯试验

E.做尿沉渣镜检