The word "lucid"(Line 1 , Para. 4)probably refers to ______.
A. highly conscious
B. understandable
C. easy to remember
D. clearly presented
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Why do recurring dreams occur according to the text？
A. Because of a repetition of event, problem or emotional weakness.
Because of a certain life situation that causes stress.
C. Because we are emotionally weak.
D. Because we can not explain them.
According to the author, dreams ______.
A. are always about the day"s events, sorting them out one by one
B. are primarily meant to relieve the stress of the day
C. are only important at the stage just before you wake up
D. move from different stages, each with different functions
Dreams can only be understood by the dreamer because ______.
A. they are always based on the dreamer"s deep feelings
B. they are expressed in a code only the dreamer can understand
C. they are always something related to the dreamer"s upbringing
D. they are always related to the dreamer"s personal culture
The text is written to answer the question ______.
Are medical residents working too hard？
B. What can doctors do to avoid making mistakes？
C. What are the causes of most medical errors？
D. Are most medical errors preventable？
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