mankind ** feeling greater pressure from the expanding number of people. the area of the earth can never be expanded. nor are there endless sources of food and clothing. yet, the number of people ** i...
tom usually gets up at 6:00 every morning.ten he has breakfast at 7:00.aftre breakfast he goes to school at 7:20.at about 12:10,he eats lunch.ang then,in the afternoon(arter school)he plays sports at ...
《**图书馆图书分类法》,其分类体系在五个基本部类的基础上,组成22个大类. 其中26个英文字母所代表的书的大类如下 a 马克思主义、列宁主义、**思想 b 哲学 c 社会科学总论 d **、法律 e 军事 f 经济 g 文化、科学、教育、体育 h 语言、文字 i 文学 j 艺术 k 历史、地理 n 自然科学总论 o 数理...
1、a.c.s american chemical society 美国化学学会 2、apec asia—pacific economic cooperation 亚太经济合作组织 3、apha american public health association 美国公共卫生协会 4、asean association of southeast asian nations 东南亚**联盟 5、a...