种群增长率
参考答案：
单位数量的个体在单位时间内增加的个数
There isn't ____ in today's newspaper. [ ]
A. something interesting
B. interesting anything
C. interesting something
D. anything interesting
为了解该患者双侧肾脏是否已缩小，应首选的检查是
A．静脉肾盂造影
B．ECT
C．CT
D．同位素肾图
E．B超
