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【单选题】
When I was very young, I thought that inside the radio ______ who liked talking very much.A．a grA.
40. When I was very young, I thought that inside the radio ______ who liked talking very much. A．a group of people lived
B.
a group of people did live
C.
did a group of people live
D.
lived a group of people
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举一反三
【单选题】两根长直载流导线平行放置在真空中,如图所示,流出纸面的电流为 2 I ,流入纸面的电流为 I ,两电流均为稳恒电流,则沿图示各条闭合回路的环流为( )
A.
B.
C.
D.
D
【简答题】编写函数,判段一个字符串是否为另一个字符串的子串
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