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PUSH SI
PUSH DI
POP SI
POP DI PUSH SI
PUSH DI，
POP SI，DI MOV AX，SI
MOV SI，DI
MOV DI，AX MOVAX，SI
MOV BX，DI
XCHG BX，AX
Dx+Di=1 Dx+Di>1 Dx+Di<1 Dx-Di>1
How Much Sleep Should Teenagers Get Teenagers Should Get More Sleep "Junk Sleep" Damaging Teenagers’ Health New Study of Teenagers’ Sleep
PUSH SI PUSH SI PUSH DI PUSH DI POP SI POP DI POP DI POP SI MOV AX，SI MOV AX，SI MOV SI，AX MOV BX，DI MOV DI，BX XCHG BX，AX
LEA AX,20[DI] MOV AX,OFFSET DI MOV AX,20[DI] LEA AX[DI]
worried happy shocked upset
the teenagers brain can’t get a good rest because of "junk sleep" the teenagers have eaten too much junk food which is bad for their health the teenagers’ parents shouldn’t buy too many electronic gadgets for them it is good for teenagers to listen to music while sleeping
都为1 都为0 DI22=1；DI26=0 DI22=0；DI26=1
PUSH SI PUSH DI POP SI POP DI PUSH SI PUSH DI POP DI POP SI MOV AX，SI MOV SI，AX MOV DI，BX MOVAX，SI MOV BX，DI XCHG BX，AX
LEAAX，20[DI] MOVAX，OFFSET DI MOV AX, 20[DI] LEA AX， [DI]
SI+SI+1，DI=DI+1 SI=SI+2，DI=DI+2 SI=SI-1，DI=DI-1 SI=SI-2，DI=DI–212.
PUSH SI PUSH DI POP SI POP DI PUSH SI PUSH DI， POP SI，DI MOV AX，SI MOV SI，DI MOV DI，AX MOVAX，SI MOV BX，DI XCHG BX，AX
（SI）=0FEH，（DI）=1FEH （SI）=100H，（DI）=202H （SI）=100H，（DI）=1FFH （SI）=100H，（DI）=1FEH
encourage teenagers to sleep as much as possible discourage teenagers’ from staying up late at night inform people of the damage "junk sleep" does to teenagers’ health instruct people how to have a long and good-quality sleep
Dx+Di=1 Dx+Di>1 Dx+Di<1 Dx-Di>1
di1=1 di2=1 di1=1,di2=0 di1=1,di2=1
Whichever However Whoever Whatever
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