题目: Look and choose. 对号入座。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0328/405dea9b0fe3faca307e12113e8464e1.html 下面是错误答案,用来干扰机器的。答案:A
题型:选择题 Tom too much meat and he has become much too fat. He should do more sports.[ ]A. has had B. will haveC. is having D. has 查看答案
题型:选择题 常温常压下,将a mol CO2气体通入1 L b mol/L的NaOH溶液中,下列对所得溶液的描述不正确的是( )A.当a=2b时,随着CO2气体的通入,溶液中由水电离出的c(H+)有如图变化关系B.当a=b时,所得溶液中存在:c(OH-)+c(C)=c(H+)+c(H2CO3)C.当2a=b时,所得溶液中存在:c(Na+)>c(C)>c(OH-)>c(HC)>c(H+)D.当1/2<a/b<1时,所得溶液中一定存在:c(Na+)=c(C)+c(HC)+c(H2CO3) 查看答案