— Guess what? Tom has failed in the exam _______ second time.

— How come? He is ______ second to none in English in our class.

A．a; a

B．the; a

C．a; /

D．the; the

面积最小的大洲和大洋是[ ]

A、欧洲和大西洋

B、北美洲和太平洋

C、亚洲和印度洋

D、大洋洲和北冰洋