蚤类主要传播的疾病是（）

A.疟疾

B.霍乱

C.麻疹

D.鼠疫

E.布鲁斯菌病

—I'm going to study engineering in Tsinghua University tomorrow.
—().

A．All the best in your study

B．All the best with your study

C．All the best in your business

D．All the best in your new job