投机的作用包括( )。 A．消除价格风险 B．促进价格发现 C．减缓价格波动 D．

2012年“两会”前夕，人民网对“2012年两会热点话题”开展调查，调查结果（局部）见下表。回答1~2题。

注：网上调查的参与者以中青年为主，其中既有非农业户籍人口，也有大量农业户籍人口；网下电话调查对象则比较集中在城市居民。

1．在“两会”十大热点候选项中，“社会保障”连续三年蝉联网上调查热度排行榜榜首，反映了广大网民对完善社会保障制度的期待。完善的社会保障制度有利于  [ ]

①完善社会主义市场经济体制

②提高劳动报酬在初次分配中的比重

③优化配置资源，增强企业社会责任

④提升消费预期，提高社会消费能力

A．①②

B．①④

C．②③

D．②④

2．从哲学角度看，这一结果存在差异的原因是[ ]

A．意识是人脑对客观存在的反映

B．实践锻炼和提高了人类的认识能力

C．追求真理是一个永无止境的认识过

D．意识对于客观事物的反映是主动的、有选择的

创新能力水平总是同人类社会的发展水平相适应的，这是由创新能力的社会性所决定的。（）

对部分新药进行上市后的监测，以便发现未知的不良反应属于何种监测方法( )

A．重点医院监测

B．记录应用

C．重点药物监测

D．记录联结

E．自愿呈报系统

读地球公转示意图，回答下列题：

地球从甲处经乙、丙、丁回到甲公转一周（甲、乙、丙、丁之间等距）四段之间用时最少的是（）

A.丁→甲段

B.甲→乙段

C.乙→丙段

D.丙→丁段

Mr. Faugel was convinced that student nervousness had affected their scores; to reduce the anxiety of these students who had already been tested, he gave 22 of them a beta blocker before readministration of the test. Their scores improved significantly. The other 8 students (who did not receive the beta blockers) improved only slightly. Second-time test-takers nationwide had average improvements which were similar to those in Faugel’’s non-beta blocker group. Beta blockers are prescription drugs which have been around for 25 years. These medications, which interfere with the effects of adrenalin, have been used for heart conditions and for minor stress such as stage fright. Now they are used for test anxiety. These drugs seem to help test-takers who have low scores because of test fright, but not those who do not know the material. Since there can be side effects from these beta blockers, physicians are not ready to prescribe them routinely for all test-takers.

Re-administration in this passage refers to giving________.

A．the test again to people without administering beta blockers

B．the test again to both groups after beta blockers have been administered to one group

C．the test to both groups of test-takers and then giving them beta blockers

D．the beta blockers without retesting