The girl ________to figure out the boy’s attitude towards her but without success.

A．managed

B．succeeded

C．attempted

D．predicted

心电监测时标准肢体导联以下哪个是对的（）

A.Ⅰ导联：两个测量电极分别置于左臂和右臂

B.Ⅰ导联：两个测量电极分别置于右臂和左腿

C.Ⅱ导联：两个测量电极分别置于左臂和右臂

D.Ⅱ导联：两个测量电极分别置于左臂和左腿

E.Ⅲ导联：两个测量电极分别置于左臂和右臂