题目

Are morning people born or made? In my case it was definitely made. In my early 20s, I hardly went to bed before midnight, and I would always get up late the next morning. But after a while I couldn’t ignore the high relationship between success and rising early. On those rare occasions where I did get up early, I noticed that my productivity was always higher. So I set out to become a habitual early riser. But whenever my alarm went off, my first thought was always to stop that noise and go back to sleep. Eventually some sleep research showed that my strategy was wrong. The most com目前撒哈拉以南的非洲还比较落后，如果让你帮非洲摆脱贫困，那么不应该做的是：A.大力开采矿产换取外汇B.加强团结与合作，减少种族纷争和部落冲突C.控制人口，保护环境D.从发达国家引进人才和技术