结合图(如图)文资料,分析回答下列问题.
20世纪60﹣80年代,随着人口急剧增长,土地与资源需求膨胀,巴西政府开始实施大规模的公路建造、农场、牧牛场、伐木、矿产开采计划,加快西部与北部地区广大疆土的开发,实行人口均衡发展政策,并把首都从沿海(M城市)迁往内陆高原上(N城市),1970年,该国政府又正式公布了北部亚马孙河流域大规模开发计划.
在“低温诱导植物染色体数目变化”的实验中,其原理或操作步骤叙述正确的是( )
看句子,连线。
① How is your mother? ____ A. You are welcome.
② Thank you.____ B. No, I haven't.
③ Have you got enough food?____ C. I was in Shanghai.
④ What did you do lastSunday?____ D. We watched TV at home.
⑤ Where were you two daysago?____ E. Sheis very well.