Question

16．The Zhoukoudian Beijing Man Site is one of the most important world
Heritage （61）sites（site） in China．Since the discovery （62）was made（make） in the 1920s，Zhoukoudian has become （63）animportant place for archaeologists from all over the world．At the site in the south-west suburb of Beijing，there is the earliest evidence of the use of fire by humans．It has been proved （64）thatpeople lived there continuously between 500，000 and 10，000 years ago．
Today，however，Zhoukoudian is （65）inserious danger．Parts of the cave have been （66）badly（bad） affected by rain and exposure to the air．Some areas are almost completely covered in weeds，（67）causing（cause） serious damage．
Pollution from nearby cement factories has also contributed to the problem．
The site is extremely expensive （68）to maintain（maintain） and （69）itwill cost between three and five million yuan to repair it．At the moment，visitors （70）are（be） not allowed to visit the caves．

Answer 1

分析 周口店北京人遗址是中国最重要的世界遗产之一．但现在洞穴有的部分已经严重受到了雨水的影响，有些地方几乎被杂草完全覆盖，造成严重损失．因此，需要维护，游客是不允许参观洞穴．

解答 61．sites 考查名词复数．one of意为"…之一"，后接可数名词复数形式．
62．was made 考查动词时态和语态．根据句中时间状语in the 1920s表示过去时间，且discovery与make是动宾关系，要用一般过去时的被动语态．
63．an 考查冠词，place意为"地方"，是可数名词，单数形式前要加不定冠词，因其前有形容词important，读音以发元音开头，用不定冠词an．
64．that 考查连词．根据句子结构，这是主语从句，it是形式主语，真正的主语是that people lived there continuously between 500，000 and 10，000 years ago从句，that不可省略．
65．in 考查介词．根据下文Parts of the cave have been badly affected by rain and exposure to the air可知，洞穴的部分已经严重受到了雨水的影响和暴露在空气中．此处应是：周口店受到严重威胁．in danger意为"在危险中"．
66．badly 考查副词．修饰动词affect要用副词．形容词bad的副词是badly．
67．causing 考查现在分词．现在分词作结果状语，相当于定语从句，which causes serious damage．
68．to maintain 考查动词不定式．根据句意：该遗址的维护是非常昂贵的．用动词不定式．
69．it 考查代词．指代前面的"维护遗址一事"．
70．are 考查主谓一致．根据句中时间状语At the moment表示现在情况，主语visitors是复数，谓语动词也应用复数形式are．

点评 在一篇200词左右的语篇（短文或对话）中留出10处空白，部分空白的后面给出单词的基本形式，要求考生根据上下文填写空白处所需的内容或所提供单词的正确形式，所填写词语不得多于3个单词．要做好语法填空题，理解短文是解题的前提，扎实的词汇、句型和语法知识是基础，英语国家的背景知识是必要的补充．考生须灵活运用语法知识，如单词词性、单词时态、名词单复数、连接词、代词、冠词等判断各空白处应填写的内容．答完后，还要通读全文，核对所填单词形式是否正确，是否符合语境．