x2+px+9是一个完全平方式,则p=_____________
±6
本题考查完全平方公式
因为是一个完全平方式,所以
所以
即正确答案为
Pressed from his parents, and ________ that he has wasted too much time, the boy is determined to
stop playing video games. [ ]
A. realizing
B. realized
C. to realize
D. being realized
第二利润源是()的节省。
A.资本
B.人力资源
C.劳动对象
D.资源