填空题

SECTION C
Questions 6 to 8 are based on the following news. At the end of the news item, you will be given 15 seconds to answer each of the following questions.
Now listen to the news.
How do the scientists measure the pitch

【参考答案】

A
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单项选择题
From the passage we know that Negroes ______.
A．have no self-respect.
B．have no history.
C．need to have an interest in history.
D．need to learn what they have done for America.
填空题
Which of the following is true
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