题目

在AlCl3和MgCl2的混合溶液中，逐滴加入NaOH溶液直至过量，经测定，加入NaOH的体积和所得沉淀的物质的量的关系如下图所示(b处NaOH溶液的体积为1L)，则下列判断不正确的是  (       )A.NaOH的浓度为0.6 mol/L                B.在a点处溶液中的溶质为NaCl C.在b点处溶液中的溶质只有NaAlO2       D.图中线段oa : ab＝5 : 1 Breakfast has long been regarded as the most important meal of the day, vital for getting the body going and preventing overeating later on. 【1】C to popular belief, the study found the first meal of the day had little impact 【2】 snacking or portion sizes later in the day.The researcher added:“The 【3】 (信念) that breakfast is the ‘most important meal of the day’ is so widespread 【4】 many people are surprised to learn that there is a lack of scientific evidence【5】(表明）whether or how breakfast may directly cause changes in our health.【6】 is certainly true that people who regularly eat breakfast tend to be slimmer and healthier but these 【7】 (个人）also typically follow most other recommendations for a healthy lifestyle, so have more 【8】 b diets and take more physical exercise.”In another study【9】p this month, researchers at Birmingham 【10】d volunteers into three groups. One skipped breakfast, others always ate it and a third continued with current diet. Four months later, no one in any group lost much weight.