The woman sold the eggs ________ seven dollars and they were sold ________ half price.

A．with, at

B．for, at

C．at, in

D．by, on

最易引起窦性心动过缓的是（）

A.急性广泛前壁心肌梗死

B.急性前壁心肌梗死

C.急性下壁心肌梗死

D.急性高侧壁心肌梗死

E.急性前间壁心肌梗死