What does the author seem to suggest about traditional values？
A. Traditional values play an insignificant role in solving social problems.
B. Traditional values are helpful to the elderly when they sue their children.
C. Traditional values are very important in preserving Wyoming"s uniqueness.
D. Traditional values are significant in helping the Bill get approved.
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Why does Ana choose to do computer design？
A. She is interested in designing computer games.
B. She"s taught herself a lot of programming.
C. She"d like to produce educational software.
D. She benefits less from a foundation level course.
According to Paragraph 6, what error had Ames made at first？
A. He thought only man-made chemicals dangerous.
B. He suspected his experiments and tests.
C. He is sometimes naive and ignorant.
D. He considered most natural substances negative.
The word barbarians in Paragraph 9 is closest in meaning to______.
A. impolite people
B. wild animals
C. wasteland
D. uncivilized people
题图所示RLC串联的正弦电路，当ω=5000rad/s时发生谐振，已知R=5Ω，L=100mH，端口总电压有效值U=10mV。求Q和通带宽度BW值及电路所标变量的有效值。
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