Too much use of coloring and lack of protein have damaged your______beautiful hair.

A.though
B.otherwise 【否则,要不然】
C.however
D.anyhow
原句 = Too much use of coloring and lack of protein have damaged your hair,otherwise it is beautiful.
染发剂用的太多,导致你的头发缺乏蛋白质,要不然,你的发质应该是很好的.
本题正确答案 B