【单选题】In China, some people are quite rich_______ some live in terrible conditions, especially in remote areas.
【判断题】有一化合物分子式为C6H12,此化合物催化加氢生成C6H14,还可以与HBr反应得到产物2,3-二甲基-2-溴丁烷,但它不能使酸性KMnO4褪色,该化合物的结构是1,1,2-三甲基环丙烷。
【判断题】Not all the rich people are greedy and some are willing to help other people in need.
【单选题】Some people are afraid that only rich people will gain the benefits brought about by the data highway.
【判断题】Some American Protestant leaders have said that people who are rich have been blessed by God.
【简答题】“W” 表示 按 计算运费,单位 为 “M” 表示按 计算,单位为
【多选题】从柑橘中可提取萜二烯-1,8,结构如图所示。 有关萜二烯-1,8的说法正确的是
B.
萜二烯-1,8与足量的H 2 反应后, 产物的分子式为C 10 H 22
C.
萜二烯-1,8与1mol的HBr发生加成反应,可以得到2种不同的产物
【单选题】以下不适合注意缺陷多动儿童的教育措施是?
A.
班主任与家长相互协作,耐心而有计划地进行教育
D.
好动只是成长过程的发展特点,随着年龄增长,好动的症状会有所减轻,教师可以不予干预