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【单选题】
一个Android应用程序默认会启动多少个Activity()?A.
1
B.
2
C.
3
D.
4
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举一反三
【单选题】In the last paragraph why did the author use the word 'distant'?
A.
Because they lived far from each other.
B.
Because they worked in different departments.
C.
Because they were indifferent to each other.
D.
Because only three of them would participate in the operation.