问题补充:
Human beings are different from animals they can use language as a tool to communicate.
A. in that
B. for that
C. in which
D. for which
答案:
(答案→)A. in that
B. for that
C. in which
D. for which
解析: 考查原因状语从句,只有A选项能作为状语从句的连接词。 人类不同于动物因为人类可以利用语言来作为交流工具。 选A