Mr. Smith is one of the foreign experts who ___________in China.

A．works

B．is working

C．are working

D．has been working

糖尿病病人，如空腹饮酒可能发生（）

A.酮症酸中毒

B.急性低血糖

C.乳酸性酸中毒

D.高渗性非酮症酸中毒

E.昏迷