当x=1时,代数式px3+qx+1的值是2001,则当x=﹣1时,代数式px3+qx+1的值是 [ ]
A.﹣1999
B.﹣2000
C.﹣2001
D.1999
答案:A
At the airport I recognized her easily because her red hair _______ in the crowd.[ ]
A. stood up
B. stood out
C. stood for
D. stood by
技术合同应按记载金额的()贴花,缴纳印花税。
A.
B.
C.
D.