A:that; which
B:why; which
C:why; what
D:that; what
75×37+75×63=____
若直线y=2x﹣b在x轴上的截距为1,则b=( )
读拼音,写词语。
hūn yōng jù pà zhào guó lián pō zhēn fēng xiāng duì
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