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【单选题】
要把P0口高4位变0,低4位不变,应使用的指令是 。A.
ORL P0, #0FH
B.
ORL P0, #0F0H
C.
ANL P0, #0F0H
D.
ANL P0, #0FH
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反馈参考答案：
举一反三
【单选题】Sometimes words alone were not enough to _________pupils along the path of knowledge
A.
provide
B.
persuade
C.
advise
D.
cause
【简答题】Do you like living alone or with someone? Why?(150 words at least)
【简答题】Swimming alone ____ be ____ erous. Do be careful. A. need, highly B. may, high C. can highly D. can high
【单选题】Do Americans like being alone?
A.
Some of them do not.
B.
They like being alone.
C.
The writer doesn't say.
【简答题】The words alone do not carry the _________. Rather, we interpret the ___________ and ___________ of the speaker by perceiving the variations of _____________.
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