问题 单项选择题

与常规的计算机相比,生物计算机具有密集度高的突出优点。______用DNA分子制成生物电子元件,将比硅芯征上的电子元件要小得多,______项式可小到几十亿分之一米。______,生物芯片本身具有天然独特的立体化结构,其密度要比平面型硅集成电路高10万倍。

A.由于 甚至 所以

B.只是 也许 可见

C.如果 甚至 而且

D.虽然 也许 然而

答案

参考答案:C

解析: 根据语境,整个句子是一个假设关系,排除ABD。

单项选择题
改错题

第Ⅱ卷(共35分)

  第四部分:写作(共两节,满分35分)

  第一节短文改错(共10小题;每小题1分,满分10分)

  此题要求改正所给短文的错误,对标有题号的每一行作出判断:如无错误,在该行右边横线上画一个勾(√);如有错误(每行只有一个错误),则按下列情况改正:

  该行多一个词:把多余的词用斜线(\)划掉;在该行右边横线上写出该词,并也用斜线划掉;该行缺一个词:在缺词处加一个漏字符号(∧);在该行右边横线上写出该加的词;该行错一个词,在错的词下划一个横线;在该行右边横线上写出改正后的词。注意:原行没有错的不要改。

  Mrs. Smith was unable to fall sleeping at night and        61.________

was very tired during the day to do anything, even the          62.________

simple things that she used to enjoy doing. She had              63.________

headaches more often, it prevented her from reading             64.________

or watched TV. The more she thought about her conditions, 65.________

the more worse she felt. At last she went to see her doctor,    66.________

whom she had known for years. The doctor listened to his    67.________

heart and said, “There is nothing serious wrong with            68.________

you, and I accept the fact you don 't feel well. Now I’ll         69.________

give you some pills (药丸)that help. Come tomorrow      70.________

morning and tell me how you felt.”