————a man who expresses himself effectively is sure to succed more rapidly than a manwhose command of English is poor.A.To be equal to other things B.Other things being equal C.Were other things equal D.Other things to be equal为什么选B

————a man who expresses himself effectively is sure to succed more rapidly than a manwhose command of English is poor.A.To be equal to other things B.Other things being equal C.Were other things equal D.Other things to be equal为什么选B
————a man who expresses himself effectively is sure to succed more rapidly than a man
whose command of English is poor.A.To be equal to other things B.Other things being equal C.Were other things equal D.Other things to be equal为什么选B

————a man who expresses himself effectively is sure to succed more rapidly than a manwhose command of English is poor.A.To be equal to other things B.Other things being equal C.Were other things equal D.Other things to be equal为什么选B
在其他条件相等的情况下,...
这是独立主格结构,equal 是个形容词,所以要加be 才能构成谓语,又因为空后的句子是完整的,有谓语,所以填入的必须是非谓语动词 being equal .句意上,要填的这句是后面那句的前提,being equal 表示进行,符合题意..
（所填空后应该有个逗号..
succed应该是succeed成功的意思）