问题补充:
nearly all behavior is learned behavior is a basic assumption has been put forward by social scientists.
A. What; that
B. That; what
C. What; what
D. That; that
答案:
A. What; that
B. That; what
C. What; what
(答案→)D. That; that
解析:D句意:几乎所有的行为都是学来的行为是社会学家提出的基本设想。“nearly all behavior is learned behavior”为主语从句,该从句不缺任何成分,故用that引导;“has been put forward by social scientists”为定语从句,先行词为assumption,将先行词代入定语从句后为:The assumption has been put forward by social scientists.由此可见先行词在定语从句中作主语,故用that引导。