海洋底部最深的地方是（ ）
A．大陆架
B．大路坡
C．大洋中脊
D．海沟
海洋底部最深的地方是海沟，世界上最深的海沟是太平洋中的马里亚纳海沟．
故选：D．
用所给单词的适当形式填空。
1. We don't live in the city. We are only ______ (visit).
2. They______ (have) a great time at yesterday's party.
3. My father______ (watch) CCTV news at 7:00 pm every day,
but yesterday he ______ (be) ill and he ______ (not watch) it.
4. ______ (fortunate), he was hurt badly.
5. —When ______ you ______ that movie?
—I______ it two days ago. (see)
