问题 单项选择题

大数据的战略意义是实现数据的增值。大数据的显著特征主要表现在:数据体量巨大、______。

A.数据类型庞杂、价值密度高和处理速度较慢
B.数据类型繁多、价值密度低和处理速度快
C.数据类型精炼、价值密度高和处理速度快
D.数据类型繁多、价值密度低和处理速度较慢

答案

参考答案:B

解析: 大数据是指大量、高速、复杂、变化不定的数据,需要用先进的方法和技术实现信息的收集、存储、分配、管理和分析。数据体量巨大、数据类型繁多、价值密度低和处理速度快是大数据的显著特征。

阅读理解

While waiting to pick up a friend at the airport in Portland, Oregon, I had an experience which occurred merely two feet away from me.

Trying to locate my friend among the passengers coming through the jet way, I noticed a man walking toward me carrying two light bags. He stopped right next to me to greet his family.

First he kissed his three children one by one and said, “It’s nice to see you. I missed you so much!” Then he hugged his wife, “I’ve saved the best for last!” giving her the longest, most passionate kiss I ever remember seeing. They stared at each other’s eyes, smiling at one another, while holding both hands. For an instant they reminded me of newlyweds(新婚夫妇), but I knew by the age of their kids that they couldn’t possibly be.

Full of admiration, I asked, “Wow! How long have you two been married?” “Being together for fourteen years total, married twelve of those.” He replied, without breaking his gaze from his lovely wife’s face. “Well, then, how long have you been away?” I asked. “Two whole days!” “Two days?” I was astonished. By the intensity (热烈) of the greeting, I had assumed he’d been gone for at least several weeks --- if not months. I knew my expression betrayed me, so I turned away my eyes and said quietly, “I hope my marriage is still that passionate after so long!”

The man suddenly stopped smiling and looked me straight in the eye. With forcefulness he told me something that left me a different person. “Don’t hope, friend…decide!” Then he smiled again, shook my hand and said, “God bless!”

With that, he and his family turned and walked away together.

I was still watching that man and his special family walk just out of sight when my friend came up to me and asked, “What are you looking at?” Without hesitation, and with a curious sense of certainty, I replied, “My future!”

77. The best title of the passage may be __________.   

A. Long Loving Hugs                                 B. My Future

C. Don’t Hope. Decide                               D. Love Is Everywhere

78. Which of the following statements is TRUE according to the passage?

A. The man replied to the author, with his eyes still fixed on his wife’s face.

B. After being away for several weeks, the man missed his family very much.

C. It was fourteen years since the couple had got married.

D. Their three kids reminded the author of newlyweds.

79. By saying “my expression betrayed me” (in Paragraph 4), the author means that __________.

A. he failed to express his ideas to the man

B. the man sensed his real feelings from his expression

C. he didn’t believe in his expression any more

D. his expression was not faithful to him

80. From the passage, we can infer that __________.

A. the experience may be easily forgotten by the author

B. the author will live a passionate life from now on

C. the author will be away from his family and hug them passionately upon his return

D. Americans prefer to save the best for last     

填空题