初二题(几道数学,英语)

来源:百度知道 编辑:UC知道 时间:2024/06/23 05:22:55
数学:
1.若5x+4的平方根是正负2,则x=( )。
英语:
1.It is important to have a good rest.(同义句转换)
( )( )( )( )( )is important.
2.I have a pain in my head today.(同义句转换)
I( )( )( ) today.
3.Tony goes to bed after he finishes his homework.
Tony ( )( )to bed ( )he finishes his homework.

X=0
解:5x+4=4得,x=0

英语:
To have a good rest is important.
I have a headache today.
Tony doesn't go to bed until he finishes his homework.

1.5x+4的平方根的平方=正负2的平方
5x+4=4
5x=0
X=0
2.To have a good rest
3.often goes when

1.首先,等号两边开平方,变成5X+4=4,所以X=0
1.To have a good rest,只是顺序不同而已
2.am headache,这个是用headache代替原来的繁琐表达
3.will go if这个我也不太确定,因为不知道你们现在是在教什么内容,但是这样填老师也不能算你错