是a chemistry change 还是a chemical change

是a chemistry change 还是a chemical change 翻译Our research has focused on a drug which is so powerful as to be able to change brain chemistry chemistry chemistry 谁能帮我分析一下这个句子.主要是中间两个which之间的部分,We may define chemistry as the science in which we deal with the chemical change in matter as a result of which it is possible to form a new substance. I want to find a job a of chemistry teacher.这个是病句吗?说明原因. Change a song,Change a Journal of Applied Chemistry是SCI吗 Journal of Chemistry是SCI收录吗 Journal of Applied Chemistry是SCI吗 Journal of Chemistry是SCI收录吗 Chemistry Letters是哪个出版社的 Are you good ( ) chemistry?A.atAre you good ( ) chemistry?A.atB.forC.withD.to as difficult as和as easy as ?A: Is chemistry more difficult than physics?B: No,chemistry isn't as _______ as physics.A.EasyB.Difficult答案是B,为什么不能选A呢? an extraordinary change of direction27题是A Just for a change a change is gonna 急 Change a stone