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【单选题】
下列说法正确的是( )。A.
各中断源发出的中断请求信号，都会标记在AT89S52的IE寄存器中
B.
各中断源发出的中断请求信号，都会标记在AT89S52的IP寄存器中
C.
各中断源发出的中断请求信号，都会标记在AT89S52的TMOD寄存器中
D.
各中断源发出的中断请求信号 ，都会标记在AT89S52的TCON、SCON以及T2CON寄存器中
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【单选题】They have produced _____ steel this year as they did five years ago.
A.
twice many as
B.
twice as many
C.
twice much as
D.
twice as much
【简答题】In many English homes, people eat four meals a day: breakfast, lunch, tea and dinner. People have breakfast from seven to nine in the morning. They eat porridge (粥) , eggs and bread. They also drink t...
【简答题】阅读短文,填入所缺单词: I have six silkworms. They are small and white. They have many ______. I put _______ on the leaves. They like _______ the leaves. They grow and grow. They ______ small, but now they are b...
【简答题】Sam and Ann have three meals a day: breakfast, lunch, 1 dinner. They have breakfast at home. 2 weekdays they have lunch at school. They 3 have quick meals such as hamburgers and hot dogs. 4 on weekend...
【简答题】Sam and Ann have three meals a day: breakfast, lunch 1 dinner. They have breakfast at home. 2 weekdays they have lunch at school. They 3 have quick meals such as hamburgers and hot dogs. 4 on weekends...
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