-----Do you know__________________?

-----At the end of July?

A．how soon is your sister coming back home

B．how often Nancy hears from her pen friend

C．when the London Olympic Games will be held

D．when will the new computer game come out

男孩，12岁，患1型糖尿病，近日因肺部感染诱发酮症酸中毒。特征性的临床症状是（）

A.烦渴、多饮、多尿

B.呼出气有烂苹果味

C.昏迷

D.皮肤干燥，弹性差

E.呼吸深大