选择最佳译文：这个研究所有400名工作人员，其中研究员和副研究员20名，有7个研究室，1个图书室，1个附属工厂，有工人120名。

选择最佳译文：这个研究所有400名工作人员，其中研究员和副研究员20名，有7个研究室，1个图书室，1个附属工厂，有工人120名。
A.There is a staff of 400 in this research institute， of whom 20 are senior research scientists.There are 7 laboratories， 1 small library and related factory where there are 120 workers.
B.The research institute has a staff of 400， of whom 20 are senior researchers.It has 7 laboratories.1 small library and 1 related factory that has 120 workers.
C.The research institute staffed with personnel of 400， of whom20 are senior research fellows， has 7 laboratories， 1 small library and 1 related factory with 120 workers.
D.There is 400 staff in this research institute， of whom 20 are senior research scientists.There are 7 laboratories， 1 small library and related factory where there are 120 workers.
正确答案：The research institute staffed with personnel of 400， of whom20 are senior research fellows， has 7 laboratories， 1 small library and 1 related factory with 120 workers.