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5.A Google-developed supercomputer has beaten a South Korean Go(围棋)grandmaster again,taking a commanding 2-0lead in a five-game series that has become an amazing global debut(首演)for a new style of artificial intelligence (AI).
After shocking the world by defeating Lee Se-dol-one of the greatest modem players of the ancient board game 一 in their opening match on Wednesday,the AlphaGo computer proved it was no luck with another victory after a tiring four-and-a-half-hour meeting.
"I am quite speechless,"Mr.Lee said after the match,adding he had found"no weakness"in AlphaGo's performance."I admit it was a very clear loss on my part.AlphaGo played a near perfect game today…I will try my best so that I will win at least one game."
The grandmaster had earlier predicted that he would beat the supercomputer by a"landslide".
The 33-year-old must win all three remaining matches to win the series that has a cash prize of $US 1million.
AlphaGo's creators have described Go as the"Mt Everest"of AI,mentioning the complexity of the game,which requires a degree of creativity and intuition(直觉)to defeat an opponent(对手)•
The most famous AI victory came in 1997,when the IBM-developed supercomputer Deep Blue beat Garry Kasparov,the then-world class chess champion,in its second attempt.
But a true mastery of Go,which has more possible move arrangements than there are atoms in the universe,had long been considered the unshared field of humans 一 until now.
AlphaGo first rose to fame with a 5-0defeating European champion Fan Hui last October,but it had been expected to struggle against 33-ycar-old Mr.Lee,who has topped the world rankings for most of the past decade.
The computer uses two sets of"deep neutral networks"that allow it to calculate data in a more human-like fashion 一 dropping millions of potential moves that human players would know were senseless.It also employs algorithms(运算法则)that allow it to learn and improve from match play experience.
28.In how many games has AlfaGo beaten Lee Se-dol up to now according to the news report?B
A.One.
B.Two.
C.Three.
D.Five
29.What result did Lee Se-dol expect himself of before the game series?D
A clear loss.
B.complete failure.
C.A lucky victory.
D.A complete victory.
30.How did Lee Se-dol feel about Afago'sl performance?A
A.Surprised.
B.Envious.
C.Hopeless.
D.Regretful
31.Which of the following is the most important to the victory of AlfaGo?C
A.Match play experience.
B.Complexity,creativity and intuition.
C.Deep neutral networks and algorithms.
D.Potential moves and human-like fashion.

分析 本文属于说明文阅读,作者通过这篇文章主要向我们描述了AlfaGo通过计算机上学习深层神经网络,累计经验,战胜了许多围棋大师,成为一种新的人工智能.

解答 28.B.推理判断题.根据第二段"the AlphaGo computer proved it was no luck with another victory after a tiring four-and-a-half-hour meeting"可知AlfaGo击败Lee Se dol两次;故选B.
29.D.细节理解题.根据第三段:AlphaGo played a near perfect game today…I will try my best so that I will win at least one game;可知Lee Se dol希望自己在游戏系列获得彻底的胜利;故选D.
30.A.推理判断题.根据第三段"I am quite speechless,"Mr.Lee said after the match,adding he had found"no weakness"in AlphaGo's performance"可知Lee Se dol对AlphaGo的表现是十分惊讶的;故选A.
31.C.细节理解题.根据最后一段"The computer uses two sets of"deep neutral networks"that allow it to calculate data in a more human-like fashion"可知深中立网络和算法是AlfaGo的胜利最重要的原因;故选C.

点评 考察学生的细节理解和推理判断能力,做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确的选择.在做推理判断题不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.

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