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【简答题】
在连接圆上任意两点的线段中，直径最长．______．
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举一反三
【单选题】Recorded background music first found its way into factories, shops and restaurants in the States. But it soon spread to other parts of the world. Now it is becoming increasingly difficult to go shopp...
A.
Background music is only used in the States.
B.
Background music is used all over the world except the States.
C.
Most shops and restaurants use background music now.
D.
It is very difficult to listen to background music.
【单选题】At first country music was popular mainly in the ______.
A.
South
B.
Northeast and West
C.
factories in Midwest
D.
South and Northeast
【单选题】_______I came to the music hall ,it was a new and grand one .
A.
Firstly
B.
For the first time
C.
The first time
D.
First time
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