哪一项是善待自己的间接的重要的美德？（）
A、节制
B、智慧
C、贵生
D、善良
参考答案：A
什么叫人口环境容量？如何通过调节手段来满足移民人口环境容量要求？
My English-Chinese dictionary has disappeared. Who _____ have taken it? [ ]
A. should
B. must
C. could
D. would
