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【单选题】
MOV R0,#40H; MOV R1,#50H; MOV R2,#30H; CLR C; LOOP:MOV A,@R0; ADDC A,@R1; DA A; MOV @R0,A; INC R0; INC R1; ——此处差一条指令——; RET;上述程序的功能是设两个十进制数分别在内部RAM40H 单元和50H 单元开始存放(低位在前),其字节长度存放在内部30H单元中。该段程序可以实现两个十进制数求和,并把求和结果存放在40H开始的单元中。该段程序划线部分还差一条指令,该条指令是?A.
DJNZ R1,LOOP
B.
DJNZ R2,LOOP
C.
DJNZ R3,LOOP
D.
DJNZ R4,LOOP
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【单选题】—Your bike is beautiful. —_______ [ ]
A.
I don't think so
B.
I think so
C.
Thank you
D.
I don't know
【单选题】Do you think he can swim? No, _____________. [ ]
A.
I don't
B.
I don't think so
C.
I think so
【简答题】补全对话A. I don't think they should be allowed to do such things.B. I don't think he is a good stud补全对话 A. I don't think they should be allowed to do such things. prefix = o ns = 'urn:schemas-microsoft-c...
【单选题】—I don't know ______ to do with this letter. May I give it to our teacher? —I don't think so. You'd better not do it like this. [ ]
A.
what
B.
where
C.
how
D.
why
【单选题】—Would you be able to go to the party?
A.
I don't expect
B.
I'm afraid not
C.
I don't think so
D.
I believe not
【单选题】-- It is not very cold. I don't think we need these big jackets. -- I don't think so,
A.
anyway
B.
neither
C.
either
D.
too
【单选题】I don't know the result for sure, but ________ with you, I don't think our team won an advantage over theirs in yesterday's competition. [ ]
A.
not at all
B.
in depends
C.
to be honest
D.
no problem
【简答题】句型转换。 1. I don't think he can swim across the Changjiang River. (改为同义句) I don't think he is _____ _____ swim across the Changjiang River. 2. You should walk your dog once a week . (对划线部分提问) _____ ____...
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