具有“绿色水库”之称的生态系统是( ) A.草原生态系统 B.海洋生态系统 C. 发布时间:2017-04-30 03:22 │ 来源:www.tikuol.com 题型:选择题 问题: 具有“绿色水库”之称的生态系统是( )A.草原生态系统B.海洋生态系统C.森林生态系统D.农田生态系统
题型:选择题 — What were you doing when Tony phoned you?— I had just finished my work and ____ to take a shower. [ ]A. had started B. started C. have started D. was starting 查看答案
题型:选择题 (7分)已知A—H均为初中化学常见的物质。其中A、C是组成元素相同的气体,且C能产生温室效应;B为红棕色,是赤铁矿的主要成分;F是紫红色金属;H是蓝色沉淀。根据右图所示的转化关系(图中反应条件均已略去),请回答:(1)写出下列物质的化学式: B 、C ;(2)写出下列反应的化学方程式:① ; ② ,反应②的基本反应类型是 。 查看答案
题型:选择题 This restaurant wasn't_ that other restaurant we went to. [ ]A. half as good as B. as half good as C. as good as half D. good as half as 查看答案
题型:选择题 根据《中国石化销售企业成品油直分销营销团队管理办法(试行)》,团队经理主持并于每日召开晨会,会议内容包括但不限于:()A.总结前一天客户开发和维系成果,分析成败经验,评估机会,寻求解决管理办法B.市场信息、分析反馈C.团队激励,鼓舞士气D.国际上重大新闻 查看答案