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已知一个LTI系统初始不储能，当输入为时，输出为，当输入为时，系统的零状态响应y(t)是（）。 A.
B.
C.
D.

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单项选择题Which of the following is wrong about cognitive psychology?

A．Cognitive psychology is a branch that focuses on internal state, such as motivation, problem solving, decision making, thinking and attention.
B．Artificial intelligence is an area based on computer science but not psychology.
C．Cognitive psychology emerged in the1960s.
D．Cognitive psychologists started to use metaphor of computer to our mind after personal computers appeared.

多项选择题归有光以“项脊轩”命名自己的书斋，其用意是：A、归有光的远祖曾在昆山项脊泾居住，有纪念自己祖先之意 B、他曾在项脊泾为官，纪念此为官的生涯 C、言书斋极狭窄，如在颈背之间。 D、书斋建在形如项脊的地方，故此得名。