That __________earthquake ___________ all the people of the city.

A．frightening; frightened

B．frightened; frightening

C．frightening; frightening

D．frightened; frightened

关于单核细胞哪项错误？（）

A.占白细胞总数的3%~8%

B.是体积最大的白细胞

C.细胞核呈椭圆形或肾形，着色较浅

D.胞质中含溶酶体和吞噬泡

E.胞质分隔成许多小区，脱落后形成血小板