chemists什么意思

chemists什么意思 DEVELOPMENT CHEMISTS chemists是什么意思? He has two sons,both of whom work as chemists.这里的as做什么成分? ANALYTICAL DEVELOPMENT CHEMISTS如何翻译 association of official analytical chemists是什么意思 He has two sons ___work as chemists.A.two of whomB.both of whomC.both of whichD.all of whom请问为什么?D为什么错?有什么固定搭配吗?红P135／123 the chemist's 和the chemists'的区别You can go to __around the corner of St.John Street and Fifth Street to buy some aspirins.A the chemistsB chemists C the chemist'sD the chemists' I went to the____to buy some medicine for my cough.A.chemist B.chemists C.chemist's D.chemists'选哪个为什么? he has 2 sons,___work as chemists.为什么用BOTH OF THEM,不用BOTH OF WHOM?选项是two of whom ,both of whom,both of which,all of whom.从这里面选，选什么，为什么？以上的BOTH OF THEM用法对吗？ We must keep away from some___,for they will do harm to our health.chemistry chemists chemical chemicals All science students,be they future physicists or chemists,should have a good foundation ．为什么要用be they? All science students,______,should have a good foundation in basic sciences.a.whether they are future physicists and chemists b.they are future physicists or chemists c.they should be future physicists or chemists d.be they future physicists or chemi pretty什么意思,什么意思,什么意思 keen什么意思意思 什么意思 什么意思 什么意思?