题型:多选题 “生物圈2号”的失败给人类带来了深刻的经验教训,使我们认识到[ ]A.与自然和谐共处的重要性B.自然界给人类提供的生命支持服务是无价之宝C.随着人类科技的进步,人类最终还是可以完全模拟出自然生态系统D.人类没有能力去完全模拟出自然生态系统 查看答案
题型:单项选择题 Because our work is very busy, so we need to relax at midday.A.We are very busy,B.Our work being busy,C.Our work so very busy,D.Because our work so very busy, 查看答案