1.Mr.White works with a chemicals import& export c

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首先,Mr.White works with a chemicals import& export pany,but he is working for this industrial fair,since he is on leave.选D表示这段时间他的状态,全句可以这样理尽管怀特先生现在正在同一家化工进出口厂合作,但是他只是为这次的工业展会工作,因为他现在正在休假.大概可以这样理解他在这个展会工作是兼职性质的,也是他休假阶段正在做的事情.
第二题,前面一句,强调句It was a physician that he represented himself,相信意思你也知道,我就不解释了；and as such he was warmly received,such指代前面一句,本来选 so that意思也没什么不对,但是有and,连接词重复.可以这样表述：he was a famous musician so that he was warmly received.