----Look at the dark clouds outside. please take the umbrella with you.

---                

A．thanks. Take it easy.

B．OK, just in case

C．well, it just depends

D．go ahead

患者女性，36岁，无症状。体检时记录到如下心电图（图5-6），应诊断为（）。

A.正常心电图

B.右心室肥厚

C.左心室肥厚

D.左前分支阻滞

E.左束支阻滞