问题
单项选择题
"Backward" languages fall behind Western languages in ______.
A．structures
B．vocabularies
C．written forms
D．sound patterns
答案
参考答案：B
解析：[分析] 细节题型。 根据第二段第四句They differ from Western languages not in their sound patterns or grammatical structures,... but only in their vocabularies可知，它们的区别在词汇方面。