A:National Day
B:Children's Day
C:English contest
用分数表示下图的阴影部分.
____
若分式 22x−1 有意义,则( )
写出小面各小数的近似数
保留一位小数
4.59≈____ 0.098≈____
The girl usually does her homework _____ it is very late at night.