英语求详细解析Research___all over the world into the possible cause of cancer in the past years.A.was made B. had been made C.has been making D.has been made可以理解为什么用完成时态,但是,怎么理解这句话?into做为什

来源：学生作业帮助网编辑：作业帮时间：2024/05/06 04:47:51

Research___all over the world into the possible cause of cancer in the past years.
A.was made B. had been made C.has been making D.has been made

可以理解为什么用完成时态,但是,怎么理解这句话?into做为什么的连接介词啊?

英语求详细解析Research___all over the world into the possible cause of cancer in the past years.A.was made B. had been made C.has been making D.has been made可以理解为什么用完成时态,但是,怎么理解这句话?into做为什
大概可以理解为,过去的几年里有做一些关于癌症的可能病因的研究.吧
research into 什么（这里是癌症的起因）

什么意思啊，research做主语，用被动，在某个方面做过研究，into后面是研究的内容

英语选择13题求详细解析英语单选要详细解析. 求详细解析过程. 高中化学求详细解析求详细过程解析! 英语选择题第5题求详细解析求各选项详细解析求第二问详细解析高中生物,求详细解析过程求《致命魔术》详细解析英语选择求解析英语选择求解析英语感叹句求解析 196英语求解析! 英语问题完形填空 16 18 22 25求解析如果详细另有重谢谁有英语近义词的详细解析急求高中语文病句例题及解析解析稍详细求ABCD选项的详细解析

英语 求详细解析Research___all over the world into the possible cause of cancer in the past years.A.was made B. had been made C.has been making D.has been made可以理解为什么用完成时态,但是,怎么理解这句话?into做为什

英语求详细解析Research___all over the world into the possible cause of cancer in the past years.A.was made B. had been made C.has been making D.has been made可以理解为什么用完成时态,但是,怎么理解这句话?into做为什