单选题
At the end of the 19th century, Austrian physician and neurologist (神经病学家) Sigmund Freud developed a new theory that explained psychology. Freud argued that the mind had deep emotional desires hidden from consciousness. He termed the mental storehouse of hidden desire the unconscious. He claimed that the unconscious was a place of irrational (不合理的), often sexual and aggressive, desires. It was, he believed, also the source of human volition (意志；意志力) and will. The unconscious was a revolutionary idea, inl9th-century psychology, which commonly asserted that the individual was an entirely rational, self-conscious being. Freud suggested that because the unconscious was the source of human will, truly rational individual behavior was impossible unless the individual came to understand the unconscious wellsprings of behavior. Freud developed psychoanalysis (精神分析学), a method of exploring the unconscious that relied on the analysis of dreams and other irrational phenomena, such as slips of the tongue. But because the unconscious was entirely hidden from individual consciousness, the key to understanding it was the participation of another person or a trained analyst in the process of unconscious discovery. Freud's theory was and remains controversial. It however had a tremendous influence on art, education, history, psychology, religion, and sociology. His subsequent work on human sexuality and the structure of the mind, along with the application of his work to social and political problems, made him one of the most important intellectual figures of the 20th century.
单选题
In 19th-century psychology, people commonly argued that the individual was ______ .
【正确答案】
C
【答案解析】根据文章中第：二段第第—句“The unconscious was a revolutionary idea, in 19th century psychology, which commonly asserted that the inividual was an entirely rational, self-concious being.”(无意识是一个革命的观念，在19世纪的心理学领域，一般专家都声称“个体是一个完全理性的”具有向我意识的人)可以推出C项正确，因为 reasonable和rational意思相近。
单选题
In the sentence. "Freud developed psychoanalysis, a method of exploring the unconscious that relied on the analysis of dreams and other irrational phenomena, such as slips of the tongue." "Slips of the tongue" means ______ .
【正确答案】
A
【答案解析】slips of the tongue的意思是“口误”。四个选项中A. stumble(结结巴巴的)最符合。
单选题
Freud suggested that because the unconscious was the source of human will, truly rational individual behavior was impossible ______ .
【正确答案】
A
【答案解析】根据文章中句子“Freud suggested…unless the individual came to understand the unconcious wellsprings of behavious”来做，其中wellsprings意思是“源泉，来源”，相对照，A项符合。