_____[A.Though B.As long as]there are two different views,scientists now generally agree that some kinds of dinosaurs lived in big groups.

_____[A.Though B.As long as]there are two different views,scientists now generally agree that some kinds of dinosaurs lived in big groups.
_____[A.Though B.As long as]there are two different views,scientists now generally agree that some kinds of dinosaurs lived in big groups.

_____[A.Though B.As long as]there are two different views,scientists now generally agree that some kinds of dinosaurs lived in big groups.
选A,though“虽然”,句子意思是：虽然有两种不同的观点,但科学家们现在通常还是赞成一些种类的恐龙是生活在一个大的群体当中,as long as 意思是“只要”、“如果”,放在句子里说不通

B 由于 所以scientists now generally agree that some kinds of dinosaurs lived in big groups.（科学家们渐渐同意有几种恐龙是群居生活）

B