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‎AT89S51单片机片内包含有( )、( )和( )。

A．CPU，存储器，打印机
B．磁盘驱动器接口，USB接口，存储器
C．存储器，定时器，CPU
D．CPU，存储器，LCD驱动器

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COMPREHENSION QUESTION 3.3.2
How did the research findings on European and Central American mothers’ narratives with young children compare?
A、The European American told a story with a beginning, middle, and end, emphasizing structure and organizational aspects; the Central American emphasized conversational aspects, telling a more circular story.
B、The Central American told a story with a beginning, middle, and end, emphasizing organizational aspects of interaction; the European American told a more circular story, lacking a definite resolution, emphasizing conversational aspects. B
C、Both told stories with a beginning, middle, and end, emphasizing organizational aspects.
D、Both told more circular stories, lacking a definite resolution, emphasizing conversational aspects.
E、None of the above