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【单选题】
要使555定时器组成的多谐振荡器停止振荡，应使（）。A.
端接高电平
B.
CO端接电容0.01uf
C.
GND端接高电平
D.
GND端接低电平
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举一反三
【单选题】People were confused in their attempts to control malaria in Europe in the early 1900s, because scientists
A.
identified only one mosquito species instead of six species.
B.
thought only three mosquito species transmitted disease.
C.
thought there was only one mosquito species.
D.
did not know what species was being studied.
【单选题】Among the men and women who reshaped the American working class during the early 1900s, there were many who were not members of labor unions.
A.
challenged the rights of
B.
criticized the views of
C.
interviewed the leaders of
D.
changed the character of
【单选题】In which section does Forster mainly discuss the topic of hypocrisy?
A.
Part IV
B.
Part V
C.
Part VI
D.
Part VII
【单选题】Which topic does the clip not mention?
A.
Somebody suggests university fees should be doubled.
B.
The increasing tuition fees will lead to burdening students with increasing amounts of debt.
C.
The increasing tuition fees will put young people off from applying to university.
D.
University authorities should have a clear understanding about economy and students's real situation before making the decision of increasing tuition fees.
【单选题】听力原文： In the early 1900s, most Americans lived on farms, and they clearly understood their role in the family. Women usually got up before the sun to milk cows, gather eggs and prepare a big breakfast...
A.
They worked in laundries.
B.
They did typing and bookkeeping.
C.
They worked as seamstresses.
D.
They did laundry, cooking, and sewing at home.
【简答题】How to translate the topic "Emerging hood"? Which period does it refer to?
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