问题 单项选择题

假设信息处理技术员甲、乙两人录入数据错误概率均为

。为了录入一批重要数据,通常采取甲、乙两人分别独立地录入这批数据,然后由计算机程序对录入数据逐个进行比较,对不一致处再与原数据比较后进行修改。这种录入数据的方式,其错误率估计为 (29)

答案

参考答案:D

解析:[要点解析] 依题意知,采取甲、乙两人分别独立地录入这批数据,此时两个人同时犯错误的概率很小。如果再由计算机程序对录入数据逐个进行比较,对不一致处再与原数据比较后进行修改,则加上计算机程序校对后的错误率应该远小于。

阅读理解

任务型阅读

        The outstanding woman physician (内科医生), Jerry Nielsen, spent a year at the Amundsen-Scott

South Pole Station as the only doctor in 1998 when she was 47.

        In early March 1999, she discovered that there was something wrong with her right breast ( * * ).

She was sure it was cancer (癌症), but she wasn’t able to go to a doctor for help. She couldn’t leave

the station for the next seven months until the snow turned back into water. Rather than wait for the

death, Dr. Nielsen decided to fight against the cancer. But without the proper medical help, she wouldn’t

live for long. Soon a USA Air Force jet came to provide her with some help. She started her own

treatments (治疗) after getting instructions from American doctors. She finally returned home that

October. Since then, she had become helpful to cancer charities.

       Sadly, Dr. Nielsen’s cancer got worse and worse. She passed away on June 23, 2009. She once

wrote to her parents, “I understand what life really is: It is not when or how you die but how you truly

were ever alive.”

根据短文内容,完成下列任务。

1. 文中划线词组passed away的汉语意思是:                     

  ______________________________________________________________________                  

2. 将文中划线句子翻译成汉语。                                          

______________________________________________________________________

3. 从文中找出与下列句子意义相近的句子。

  Dr. Nielsen decided to fight against the cancer instead of waiting for the death.    

______________________________________________________________________

4. 根据短文内容,回答下列问题。                

How old was Dr. Jerry Nielsen when she passed away?   

______________________________________________________________________

5. 用文中两个形容词描述一下Jerry Nielsen。   

 (1) __________________________         (2)  ___________________________      

单项选择题