英语：Unit4《Global warming》测试（1）（新人教版选修6）
1．________ with the size of the whole earth, the biggest ocean does not seem big at all.
A. Compare B. When comparing
C. Comparing D. When compared
2．Please tell me how the accident_____. I am still in the dark.
A. came by B. came out
C. came to D. came about
