运动员完成传棒后退出跑道时，阻碍了邻道运动员的跑进，但裁判员认为是无意的，可以不作任

如果票据的取得是无对价的，则不享有票据权利。( )

What does a UFO look like? Do you believe there are aliens outside the earth? Maybe nobody can tell us exactly, but some of us believe that we humans are not alone in this world. We have friends living outside the earth. And a lot of people in the world think they really have seen a UFO flying in the sky. Now many scientists are trying to understand the origin of the UFO sightings. Scientists even try to draw pictures about aliens and aliens’ life according to their imagination.        

Because we don’t really know about it, we call it UFO or Unidentified Flying Object. Many of us are curious(好奇的) about it and interested in it very much.

While scientists have no same ideas about whether there is an alien or not, it seems that China has been home to some UFO sightings recently.

On August 20^th,2011, a UFO was seen at 21:00 by the pilot on the plane which took off from Pudong International Airport to Changchun. At almost the same time, many astrophiles(天文爱好者)took pictures of it. Later, reports from some cities said that the UFO was seen. The pilot said the UFO was small at first, then expanded(扩大),moved north, and disappeared(消失)several minutes later. However, he couldn’t exactly make sure about what he had seen.

小题1:What do scientists know about the aliens according to this passage?

A．Scientists know about the aliens’ life well.

B．Some scientists try to imagine aliens’ life.

C．Scientists have the same idea about the UFO.

D．Many scientists have already understood the origin of the UFO sightings.小题2:What happened on August 20^th,2011?

A．A UFO took off from Pudong International Airport.

B．A pilot took pictures of the UFO.

C．Many astrophiles saw the UFO.

D．The UFO was small when it moved north.小题3:Which of the following sentences is NOT true according to this passage?

A．UFO is short for Unidentified Flying Object.

B．Some people from some cities said that they saw the UFO on August 20^th,2011.

C．The pilot could exactly make sure what he had seen.

D．Many of us are interested in the UFO.

太阳活动对地球造成的影响有

①引起潮汐现象          ②干扰无线电短波通讯 

③产生“磁暴”现象     ④诱发地质灾害

A．①③

B．①②

C．③④

D．②③

某企业2011年共实现会计利润237万元，且企业当年年初未弥补亏损43万元均为2004年发生的经营亏损，当年计算的投资收益中含国库券利息收入17万元，除以上事项外，企业无其他纳税调整或差异事项，且该企业所得税率为25%。则当年企业实现的净利润为( )万元。

A．182
B．177.75
C．186
D．174.55

动脉性充血的主要病理变化是（）

A.组织器官的体积增大

B.组织器官重量增加

C.局部呈鲜红色

D.局部温度升高

E.小动脉和毛细血管扩张，充满红细胞