请你从下列各式中,任选两式作差,并将得到的式子进行因式分解:4a2,(x+y)2,1,9b2。
解:,
,,,,,,
,
(答案不唯一)。
I'm sorry we haven't seen each other for years . I can't _______ your name at the moment . [ ]
A. think up
B. think about
C. think over
D. think of
在一个虔诚的佛教徒心中,享有至高无上地位的是[ ]
A.上帝
B.耶酥
C.释迦牟尼
D.穆罕默德