The primary purpose is to those achievements in biological research the public.
A. make; known by
B. make; known to
C. make; know to
D. make; knowing by
网友回答
A. make; known by
(答案→)B. make; known to
C. make; know to
D. make; knowing by
解析：这题考察词组“make sb done，过去分词这里做宾语补足语，因为those achievements in biological research是被公众知晓，所以用known，be known to sb “为某人知道”，选B。