64的平方根是( )。
±8
选词填空。
1. Can __________ (you, your) find my key?
2. You can __________ (wear, wearing) them.
3. My pyjamas __________ (is, are) lost.
4. I can't find __________ (I, my) teddy bear.
5. What __________ (is, am) the matter?
遵纪守法,纪律的本质就是“()",纪律主要有五个方面,组织纪律,工作纪律,法制纪律和保密纪律。
A.命令
B.服从
C.执行
D.照办