药品所含成分与国家药品标准规定的成分不符合的是（）
A.劣药
B.假药
C.残次药品
D.仿制药品
E.特殊药品
参考答案：B
把抛物线y=ax2+bx+c的图象向右平移3个单位，再向下平移2个单位，得到图象解析式为y=x2-4x+5，则有a=______b=______c=______．
Once upon a time，a(n)________famous scientist said that life was not easy for any of us but first of all we should believe in ourselves.
A．another
B．sure
C．some
D．certain
