问题 单项选择题

阅读下面短文,回答下 * * 道题。
光脑,人们也许还陌生,但制造光脑的尝试,科技界早在20世纪50年代就开始了,直到20世纪80年代中后期,才可以说有了决定意义的突破。20世纪90年代中期,世界上有一台光脑已由欧共体的英国、法国、比利时、德国、意大利等国的70多名科学家研制成功,其运算速度比电脑快1000倍。
科学家们预计,光脑的进一步研制将成为21世纪高科技课题。专家们预言,21世纪将是光脑时代。
光脑在哪些方面优越于电脑呢
光脑并行处理能力强,具有超高速运算速度。电子的传播速度为593千米/秒,而光子的速度为30万千米/秒。同时,超高速电脑只能在低温状态下工作,而光脑在室温下即可展开工作;和电脑相比,光脑信息存储量更大。
众所周知,对于电脑来说,电子是信息的载体,它只能通过一些相互绝缘的导线来传导,因此,尽管现今的电脑运算速度不断提高,但电脑的能力极限还是隐约可见的。就是在最佳情况下,电子在固体中的运行速度也远远不如光速。另外,无论微电路中的电流是多么的微弱,但随着装配密度的提高,散发的热量也在不断增加,使导体之间产生电磁作用,从而制约了电脑的运行速度。
和电脑相比,光脑的“无导线计算机”传递信息的平行通道,其密度实际上是无限的。一枚直径5分硬币大小的棱镜,它的通过能力超过全世界现有电话电缆的许多倍。
此外,还有极为理想的光辐射源——激光器可供使用。最主要的一点是光子不需要导线,即使在光线相交的情况下,它们之间也丝毫不会相互影响。
科学家正试验将传统的电子转换器和光子结合起来,制造一种“杂交”的计算机。这种计算机能更快地处理信息,而又可克服目前巨型机的一个大痼疾——内部过热。而一台光脑只需要一台电脑所需要能量的一小部分就能驱动,从而大大减少机器产生的热量。光脑的许多关键技术,如光存储技术、光互联技术、光电子集成电路等都己获得突破。目前,科研工作面临的迫切任务是最大幅度地增加光计算机的运算能力,即光开关的数量。
科学家预计,成熟的、可实际应用的光脑将会在21世纪初出现。

根据原文所给信息,以下分析错误的一项是( )。

A.脑在室温下信息存储量比电脑更大。

B.电脑的信息载体是只能通过一些相互绝缘的导线来传导的电子。

C.虽然电脑的运算速度还在不断提高,但其能力是有极限的。

D.电脑的运行速度和散热量是一对相互并存制约的矛盾。

答案

参考答案:A

解析: 原文并没有将光脑和电脑在室温下的存储量进行比较。

完形填空
Sally jumped up the moment she saw the surgeon come out of the operating room. She asked, “How is my little boy?”
The surgeon said, “I’m ____. We did all we could, but your boy didn’t ____ it.” 
Sally ____into the chair. The surgeon asked, “Would you like some time with your son before he was transported to the ____?” Sally nodded. While saying goodbye, she ran her fingers ____ through his thick curly hair. “Would you like a lock of his hair?” the surgeon asked. Sally nodded yes. The surgeon cut a few hairs, and handed them to Sally. The mother said, “It was Jimmy’s idea to ____ his body to the university for study. He said it might ____ somebody else. “I said no at first, ____ Jimmy said, ‘Mom, I won’t be using it after I die. Maybe it will help some other little boy spend one more day with his Mom.’”
“My Jimmy had a heart of ____, always thinking of someone else, always wanting to help others if he could.” she went on.
Sally walked out of the hospital. She put the bag with Jimmy’s ____ on the seat beside her in the car. The drive home was ____. It was even harder to enter the ____ house. She carried Jimmy’s belongings, and the lock of his hair to her son’s room. She started placing the model cars and other personal things back in his room ____ where he had always kept them. She lay down across his bed and, hugging his pillow, ____ herself to sleep.
It was around midnight when Sally ____. Lying beside her on the bed was a letter. The letter said,
“Dear Mom,
I know you’re going to ____ me, and me too. I will always love you, Mom, even more ____ each passing day. Someday we will see each other again. Until then, if you want to ____a little boy so you won’t be so lonely, that’s OK with me. He can have my room and old toys to play with.
Don’t be sad thinking about me. I don’t hurt any more. The cancer is all ____. I don’t have to stand that ____any more. The angels in Heaven are so tender. They say I’m a Special Angel! I  love you, Mom.”
小题1:
A.worried B.sorryC.happy D.grateful
小题2:
A.make B.passC.winD.like
小题3:
A.knockedB.lookedC.sankD.got
小题4:
A.house B.churchC.hospital D.university
小题5:
A.anxiouslyB.lovinglyC.patientlyD.angrily
小题6:
A.donateB.moveC.showD.lend
小题7:
A.affectB.helpC.protectD.impress
小题8:
A.forB.andC.soD.but
小题9:
A.goldB.stoneC.wisdom D.bravery
小题10:
A.toysB.clothesC.belongingsD.letters
小题11:
A.longB.smoothC.difficultD.dangerous
小题12:
A.emptyB.familiarC.bigD.old
小题13:
A.roughlyB.exactlyC.especiallyD.possibly
小题14:
A.putB.sent C.criedD.buried
小题15:
A.wroteB.spokeC.sleptD.awoke
小题16:
A.understandB.forgiveC.leaveD.miss
小题17:
A.withB.aroundC.onD.in
小题18:
A.saveB.hostC.visitD.adopt
小题19:
A.lostB.goneC.cured D.spotted
小题20:
A.depressionB.sadness C.painD.stress
选择题