[简答题]动态人群（dynamic population）

[简答题]人群归因危险百分比(population attributable risk proportion，PARP)

[单项选择]分析动态人群的发病情况用哪项指标( )
A. 累积发病率
B. 死亡率
C. 患病率
D. 发病密度

[简答题]人群归因危险度(population attributable risk，PAR)

[简答题]人群归因危险度百分比(population attributable risk percent，PAR%)

[单项选择]The following are all dynamic verbs(动态动词) EXCEPT
A. remain.
B. turn.
C. write.
D. knock.

[名词解释]dynamic mutation

[单项选择]
1 Population ecology is the science that measures changes in population size and composition and identifies the causes of these fluctuations．Population ecology is not concerned solely with the human population．In ecological terms．a population consists of the individuals of one species that simultaneously occupy the same general area．rely on the same resources, and are affected by similar environmental factors．The characteristics of a population are shaped by its size and by the interactions among individuals and between individuals and their environment．
2 Population size is a balance between factors that increase numbers and factors that decrease numbers．Some factors that increase populations are favorable light and temperature，adequate food supply, suitable habitat, ability to compete for resources, and ability to adapt to environmental change．Factors that decrease populations are insufficient or excessive
A. Any species of life can be studied in population ecology．
B. Population ecologists care about the future of humanity．
C. The growth of the human population is a major concern．
D. Population ecology does not consider humans worthy of study．

[单项选择] (31) 是用于描述软件详细设计的语言， (32) 是支持动态汇集(Dynamic Binding)概念的语言， (33) 是支持强类型(Strong Yying)概念的语言， (34) 语言的一个主要特点是用透明性， (35) 语言是一种过程性语言。

A. Pascal
B. PDL
C. Smalltalk 80
D. Lisp