【单选题】【消耗次数：1】
设SP=50H,执行段间返回指令RET后,寄存器SP的内容是（）。
①
44H
②
54H
③
5AH
④
5CH
参考答案：
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相关题目
【单选题】
若已知(SP)=2000H，(AX)=0020H，则执行指令，PUSHAX后，(SP)和SS)：(SP))的值分别为（）
①
2002H，00H
②
2000H，20H
③
1FFFH，00H
④
1FFEH，20H
【单选题】
执行段间返回RET指令时，从堆栈中____
①
先弹出断点的偏移地址，再弹出段地址
②
先弹出断点的段地址，再弹出偏移地址
③
弹出断点的偏移地址
④
弹出断点的段地址
【单选题】
指令ADD A，R0 执行前（A）=38H，（R0）=54H，（C）=1 执行后，其结果为（ ）。
①
（A）=86H
②
（A）=20H
③
（A）=18H
④
（A）=00H
【单选题】
指令MOV R0， 20H执行前（R0）=30H，（20H）=38H，执行后（R0）=（ ） 。
①
工作寄存器R0～R7
②
专用寄存器SFR
③
程序存贮器ROM
④
片内RAM的20H～2FH安节中的所有位和部分专用寄存器SFR的位
【简答题】
若SS = 3240H, SP = 2000H, 栈顶的实际地址为[填空1]。
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①
nephews
②
cousins
③
brothers
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nieces
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Education and medical care are very ____ in theUnited States.
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much
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cheap
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many
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expensive
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Since the road is wet this morning, ____ last night. ?
①
it must have rained ?
②
?it must rain ?
③
it must be raining ?
④
it must have been rained?
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The factory is said ____ in a fire two years ago.
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to have destroyed
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to be destroyed
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to destroy
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to have been destroyed
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risen
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①
to do
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①
That
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Because
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If you don’t think it necessary to make ____ any missed lessons, speak up now.
①
up for
②
up with
③
up to
④
away for
【单选题】
No sooner had he sat down to lunch ____ there was a knock at the door.
①
when
②
that
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as
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than
【单选题】
When the teacher had ____through with the class, they felt very ashamed.
①
gone
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got
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done
④
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