1. [多选题]社会主义荣辱观强调“以艰苦奋斗为荣、以骄奢淫逸为耻”，就是指（ ）
A. 要增强法律意识(enforcing legal consciousness)，自觉维护法律尊严
B. 要认识到我们现代化建设的路还很长，任务还很艰巨
C. 必须在新时期发扬艰苦奋斗的精神
D. 形成“节约光荣、浪费可耻”的社会风尚
2. [单选题]According to the passage, what helps to explain why the population problem has come on "all of a sudden"?
A. The penny which doubles itself every day for one month.
B. The time span of at least two million years in human history.
C. An illustration of the exponential growth rate given by the author.
D. The large amount of money you would luckily make after the fourth week.
