15．A computer program has beaten a human champion at the ancient Chinese board game
Go．It marked an important advance for the（61）development（develop） of artificial intelligence．The program，（62）called（ call ） AlphaGo，had taught itself how to win．It beat the European champion in all five games of a match in October．The developers say（63）its（it） learning ability may someday let computers help solve real-world problems．Those could include making medical diagnoses and （64）conducting（conduct） scientific research．
Previously computers have beat humans in other（65）games（ game）．But among classic games，Go has long been viewed as the most challenging for artificial intelligence to master．
Go originated in China more than 2，500 years ago．（66）Thegame involves two players who take turns putting markers on a checkerboard-like grid．The object is to surround more area on the board with the markers than one's opponent （對手）．players obtain the opponent's pieces（67）bysurrounding them．The rules are simple，（68）butplaying it is not．It's probably the most complex game ever created by humans．
Martin Mueller，a computing science professor，（69）has worked（work） on Go programs for 30 years．He said the new program"is really a big step up from everything else（70）thatwe've seen．It's a very impressive piece of work．"

分析 本段文字講述了一個計算機程序在中國古代圍棋大賽中打敗了人類在這個領(lǐng)域的冠軍，這將極大地促進人類智能的發(fā)展，開發(fā)者認(rèn)為計算機程序的學(xué)習(xí)能力可能某天會讓電腦幫助解決真實世界中的問題．先前的計算機程序曾經(jīng)在其他的游戲上打敗過人類，但圍棋被認(rèn)為是對人工智能最具有挑戰(zhàn)性的．圍棋于2500年前起源于中國，它的規(guī)則很簡單，但是玩起來很復(fù)雜．一位計算機科學(xué)教授Martin Mueller認(rèn)為，這個程序是一項非常了不起的工作．

解答 61．development；考查名詞，空格前是定冠詞the，后面應(yīng)該跟名詞，故用development．
62．called；考查分詞作定語，動詞call和句子的主語是被動關(guān)系，所以用過去分詞作后置定語．
63．its；考查代詞，分析句子可知這里的it指代上文的A computer program，空格后面是名詞短語learning ability，所以空格處用名詞性物主代詞its．
64．conducting；考查并列成分，句中and連接兩個并列成分，作include的賓語，前面的動詞make用了動名詞形式，后面的conduct也要用動名詞形式．
65．games；考查名詞復(fù)數(shù)，空前的代詞other指"其他的"，結(jié)合上下文，這里所提到的游戲不止一個，所以用復(fù)數(shù)形式．
66．The；考查冠詞，結(jié)合上下文語境，空格后面的game是上文所提到的，所以用定冠詞表示特指．
67．by；考查介詞，空格后面是動名詞，所以空格處應(yīng)該用一個介詞，結(jié)合句意，此處表明一種方式，所以這里用by表示方式．
68．but；考查連詞，分析句子可知空格處缺少連詞，結(jié)合上下文句意，前后兩個句子是轉(zhuǎn)折關(guān)系，所以用but．
69．has worked；考查動詞的時態(tài)，結(jié)合上下文，根據(jù)句子中的標(biāo)志性時間狀語for 30 years可知，本句要用現(xiàn)在完成時，所以空格處填has worked．
70．that；考查定語從句，此處用that引導(dǎo)定語從句，關(guān)系代詞that作從句的賓語．

點評 首先要通讀全文，了解大意，抓住上下文語境所提供的信息，仔細(xì)分析帶空格的句子，明確空格所要填的詞義，詞型和短語搭配給出所要填的正確形式，然后整體閱讀短文，核對答案

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