1.I want ( ) stay at home.
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1.I want ( ) stay at home.
2.Fish ( ) fly in the sky.
3.Doctors often help the sick people in the ( )
4.Mike kicks a good time.He is very ( )
5.look at the traffic light.It is ( ).Let us go
3X+2Y+Z=392
X+3Y+2Z=400
2X+Y+3Z=336
解得X=60 Y=84 Z=44
3X+2Y+Z=392
X+3Y+2Z=400
2X+Y+3Z=336
最后解得X=60 Y=84 Z=44
2.Fish ( ) fly in the sky.
3.Doctors often help the sick people in the ( )
4.Mike kicks a good time.He is very ( )
5.look at the traffic light.It is ( ).Let us go
3X+2Y+Z=392
X+3Y+2Z=400
2X+Y+3Z=336
解得X=60 Y=84 Z=44
3X+2Y+Z=392
X+3Y+2Z=400
2X+Y+3Z=336
最后解得X=60 Y=84 Z=44
1)I want ( to ) stay at home.[want to do sth.]
2)Fish ( can't ) fly in the sky.
3)Doctors often help the sick people in the ( hospital ).
4)Mike kicks a good time.He is very ( happy ).
5)look at the traffic light.It is ( green ).Let us go.
3X+2Y+Z=392①
X+3Y+2Z=400②
2X+Y+3Z=336③
由②×3得:3X+9Y+6Z=1200④
由④-①得:7Y+5Z=808⑤
由②+③得:3X+4Y+5Z=736⑥
由⑥-①得:2Y+4Z=344⑦
把⑤和⑦重新组成方程组得:7Y+5Z=808⑤
2Y+4Z=344⑦
解之得:Y=84
Z=44
把Y=84,Z=44代入①得:X=60
∴原方程组的解为:X=60
Y=84
Z=44
2)Fish ( can't ) fly in the sky.
3)Doctors often help the sick people in the ( hospital ).
4)Mike kicks a good time.He is very ( happy ).
5)look at the traffic light.It is ( green ).Let us go.
3X+2Y+Z=392①
X+3Y+2Z=400②
2X+Y+3Z=336③
由②×3得:3X+9Y+6Z=1200④
由④-①得:7Y+5Z=808⑤
由②+③得:3X+4Y+5Z=736⑥
由⑥-①得:2Y+4Z=344⑦
把⑤和⑦重新组成方程组得:7Y+5Z=808⑤
2Y+4Z=344⑦
解之得:Y=84
Z=44
把Y=84,Z=44代入①得:X=60
∴原方程组的解为:X=60
Y=84
Z=44
1.I want ( ) stay at home.
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