–Who should be responsible for the accident?

-The boss, not the workers. They just carried out the order                  .

A．as told

B．as are told

C．as telling

D．as they told

能杀灭肠内外各型溶组织阿米巴原虫的药物是（）

A.氯喹

B.依米丁

C.灭滴灵

D.吡喹酮

E.喹碘仿