第3题: [单项选择]Less developed countries ______. A. devote 7% or so of their budget to basic research B. devote a large portion of their budget to applied research C. realize that progress depends on basic research D. encourage their career scientists to experiment 参考答案:A 答案解析:细节题。
第36题: [单项选择]隔离的发展,顺序经过了以下几个阶段()。 A. 类目隔离、疾病隔离、体内物质隔离、普遍预防、标准预防 B. 类目隔离、体内物质隔离、疾病隔离、普遍预防、标准预防 C. 类目隔离、体内物质隔离、普遍预防、疾病隔离、标准预防 D. 类目隔离、疾病隔离、普遍预防、体内物质隔离、标准预防 E. 疾病隔离、类目隔离、体内物质隔离、普遍预防、标准预防 参考答案:D