问题 选择题

下列关于动脉的叙述中,正确的是(  )

A.流动脉血的血管

B.把血液从身体各部分送回心脏的血管

C.流静脉血的血管

D.把血液从心脏输送到身体各部分的血管

答案

人体内的血管有动脉血管、静脉血管、毛细血管三种类型.其中动脉血管管壁厚,弹性最大,管腔较小,血流速度快,其功能为将血液从心脏输送到全身各处去;静脉血管管壁较薄,弹性较小,管腔大,血流速度慢,其功能为将血液从全身各处输送到心脏去;毛细血管管壁最薄,只有一层上皮细胞构成,管腔最小,只允许红细胞呈单行通过,血流速度极慢,数量最多,其功能为物质交换的场所.

故选:C

填空题
完形填空
We all have weaknesses and strengths—no matter who we are .Some get sick easily.
Some are  36  people in communication, struggling with  37 .
Sometimes weaknesses seem to outweigh (胜过)the strengths and sometimes it’s the other way around.  38  ,facing huge limitations, many people tend to  39  it  as just bad luck ---but not everyone. Those who rise over their weaknesses can still manage to  40  extraordinary things.
I  41  a school prize –giving ceremony and the guest speaker was Andrew Becroft,  42 had a severe stutter (结巴 ) as a child .  43  allowing this to limit  him , he chose to overcome it. Now he is a famous judge . Not only  44  he become  successful, but he did so in a profession  45  he had to speak before others regularly. Had he not worked on his  46  ability, it would have been very limiting to his success in life and work.
Many people face far huger limitations, such as loss  47  legs or arms , being born extremely poor,  48 you do. But whatever the limitation, you’ll  49 find people who have overcome it. Helen Keller, who fell  50 and lost  her sight and hearing at 19 months old, worked hard to be a famous woman with great  51  . Mark Inglis lost both his legs in a mountain climbing accident,  52  has since climbed Mt. Everest.
If one of them had told you what they hoped to achieve, you would have nodded kindly while  53  thinking to yourself that they had no chance . And yet the results speak for  54  .
Though most of us will never have to face such challenges , yet most of us will never achieve to the  55  that these people have either if we never seriously think of what we can do.
小题1:
A.hopelessB.cheerfulC.carelessD.skillful
小题2:
A.sympathyB.securityC.relationshipsD.scholarships
小题3:
A.PersonallyB.ImportantlyC.GenerallyD.Fortunately
小题4:
A.believeB.acceptC.receiveD.think
小题5:
A.experienceB.accessC.challengeD.achieve
小题6:
A.preparedB.interviewedC.visitD.attended
小题7:
A.whichB.whoC.whomD.that
小题8:
A.Because ofB.Instead ofC. Due toD.Apart from
小题9:
A.didB.couldC.wouldD.had
小题10:
A.whatB.whichC.whereD.why
小题11:
A.communicatingB.readingC.actingD.speaking
小题12:
A.forB.fromC.ofD.in
小题13:
A.beforeB.thanC.untilD.as
小题14:
A.alwaysB.sometimesC.seldomD.never
小题15:
A.asleepB.illC.behindD.apart
小题16:
A.congratulationsB.impressionsC.achievementsD.rewards
小题17:
A.soB.butC.andD.or
小题18:
A.quietlyB.slowlyC.seriouslyD.carefully
小题19:A. yourself        B, ourselves         C. themselves       D. itself
小题20:
A.stageB.degreeC.placeD.position