[多项选择]产业结构调整的方向和重点包括() A. 巩固和加强农业基础地位,加快传统农业向现代农业转变 B. 加大调整改造加工工业的力度,振兴支柱产业 C. 加强能源、交通、水利等基础设施建设,增强对经济社会发展的保障能力 D. 加快发展高技术产业,进一步增强高技术产业对经济增长的带动作用 E. 大力发展循环经济,建设资源节约和环境友好型社会,实现经济增长与人口资源环境相协调
A. he was sure his son was good at his lessons B. he spent all his energies on his business C. he knew nothing about the education D. his wife looked after their children 参考答案:B 答案解析:[解析]从文章第一段第三句:He was busy with his business and neverasked him how he got along with his studies.得知。
A. The formation of a funnel cloud. B. The sighting of a funnel cloud. C. The bulletin issued by the National Weather Service. D. The convergence of favorable conditions for a funnel cloud to form. 参考答案:D
第34题: [单项选择]β-Gal常用的底物是 () A. OPD B. TMB C. 5-ASA D. ABTS E. 4-MUG 参考答案:E 答案解析:β-半乳糖苷酶(βGal)的底物常用4-甲基伞酮基-β-D半乳糖苷(4-MUG),经酶水解后生成高强度荧光物质4-甲基伞形酮(4-MU),可用荧光计检测。荧光的放大作用大大提高了方法的敏感度。因此本题