已知全集U=R，集合P={x|x2≥9}，Q={x|x＞2}，则Q∩CUP=（

The population of elephant seals, reduced by hunting to perhaps a few dozen animals early in this century, has soared under federal protection during the last few decades. However, because the species repopulated itself through extensive inbreeding, it now exhibits a genetic uniformity that is almost unparalleled in other species of mammals, and thus it is in far greater danger of becoming extinct than are most other species.
Given the information in the passage above, which of the following is most likely the reason that other species of mammals are leas likely than elephant seals to become extinct ？（）

A．Other species of mammals have large populations, so the loss of a few members of the species is not significant.

B．Other species of mammals have increased their knowledge of dangers through the experience of generation after generation of animals.

C．In other species of mammals, hunters can readily distinguish between males and females or between young animals and adults.

D．In other species of mammals, some members of the species am genetically better equipped to withstand a disease or event that destroys other members of the species.

E．Other species of mammals have retained habits of caution and alertness because they have not been protected as endangered species.

探究式课堂教学法相较于一般学习法，其特征有哪些？

蛛网膜下腔出血最可靠的诊断依据是（）。

A.头痛、呕吐

B.脑膜刺激征

C.腰穿时发现血性脑脊液

D.一侧动眼神经麻痹

E.偏瘫

违反《民用航空电信人员执照管理规则》规定，未取得电信人员执照而独立从事通信导航监视服务保障工作，情节严重的，（）年内不得提出电信人员执照申请。

A、1

B、2

C、3

D、4

目前，手机短信已成为最迅捷、最广泛、最有效的信息传播方式之一。作为新的传播媒介，它的最大特点是（）

①传播同网、全球同时、受众主动、双向互动

②用精练的语言传达丰富多彩的内容

③具有娱乐性、情感性、艺术性和哲理性，让人回味无穷

④超越时空限制，汇集来自世界各地的信息，具有文化传递、沟通、共享的强大功能

A.①②

B.②③

C.①④

D.③④