-I think _______ask Tim for some advice.

-_______. Last time when I turned to him, he refused to help.

A．you'd rather; I think so

B．you'd better; I'd rather not

C．you have to; I'd rather not

D．you'd better; I think so

目前尿糖检测试纸的测定方法是 （）

A.葡萄糖氧化酶法

B.己糖激酶法

C.福林-吴法

D.邻甲苯胺法

E.毛细管电泳法