5．I thought things would get better, but ,______, they are getting worse.

A．as they are

B．as it is

C．as it was

D．as they were

在生理浓度下胰岛素不能引起下列哪一种作用( )

A．DNA及RNA合成增强

B．脂肪合成增强

C．葡萄糖氧化增强

D．糖异生增强

E．葡萄糖转运至细胞内增强