原式=(x+1-2)2
=(x-1)2,
当x-1=3时,
原式=(3)2=3.
There are about two students in our school.
A. thousand B. thousands C. thousands of
地西泮过量中毒的特效拮抗剂是()。
A.纳洛酮
B.氟西泮
C.利多卡因
D.苯妥英钠
E.氟马西尼