线性规划需满足的条件是（）。
A.目标函数为线性
B.约束条件为线性
C.目标函数与约束条件均为线性
D.都不对
参考答案：C
It was ______terrible earthquake and ______ number of people who were killed reached more than 20,000.
A．the, a
B．a, the
C．the, the
D．a, a
急性肾炎小儿恢复上学的指标是（）
A.补体正常
B.血压正常
C.血尿消失
D.红细胞沉降率正常
E.Addis计数正常
