单项选择题

Android中，如何实例化在布局文件中已有的控件？
A、new Xxx()
B、findViewById()
C、getElementById()
D、getResources()

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单项选择题

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单项选择题

‎Which of the following is correct?‌

A．There was a fusion between Rock music and other music genres in the90s.
B．Hip hop had gained popularity since it indicated a means of social protest and a form of self-expression.
C．The 70s saw the rise of reggae and the emergence of disco followed.
D．Rock music originated in the UK in the 1960s.