科学的否定是和什么同步的（）
A、误解
B、批判
C、权威 * *
D、创新
参考答案：D
如果一元二次方程x2+（m+1）x+m=0的两个根是互为相反数，那么有（ ）
A．m=0
B．m=-1
C．m=1
D．以上结论都不对
What makes a play ___ masterpiece is that the ideas behind ___ play are about problems which are still important to ___ people of different ages in ___ modern times. [ ]
A. the; the; the; /
B. a; the; the; /
C. a; the; /; /
D. a; a; the; /
