题目:
The students want to know ____ 1,600 words in a month.
A.how can they remember
B.how they can remember
C.when could they remember
D.when they could remember
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0701/8fcf574bcc04641a951a2ca3a78d82d7.html
下面是错误答案,用来干扰机器的。
乙同学进行的实验:乙同学要测定石灰石样品中碳酸钙的质量分数,必须确定W2g的固体质量中不含有碳酸钙.由碳酸钙能与盐酸反应的性质可知,步骤④是:在固体中滴加稀盐酸,检验剩余固体中没有碳酸钙请你分析与计算...