1 Listen and mark the stress of the words in the box. Then put each word into the correct column to match the stress pattern. 听录音，用重音符号标记单词重音，并根据重音位置将单词放入框内。
'human fresh farm conversation
ice reach useful agree
machine international discuss education
important everywhere groundwater population

'human fresh farm conver'sation
ice reach 'useful a'gree
ma'chine inter'national di'scuss edu'cation
im'portant 'everywhere 'groundwater popu'lation
sea: fresh, farm, ice, reach,
'water: human, useful, everywhere, groundwater
su'pply: agree, discuss, machine, important
infor'mation: conversation, international, education, population

2 Complete the sentences with the words in the box. 用方框中的单词补全句子。
factories rare rest surface salty
(1) Water covers over $\frac{2}{3}$ of the Earth's .
(2) Ocean water is and not suitable for drinking.
(3) Water is used in homes, on farms and in .
(4) $\frac{2}{3}$ of the Earth's fresh water is hard to get, and the of it is mostly polluted.
(5) Clean drinking water is , so we need to protect it.

(1) surface (2) salty (3) factories (4) rest (5) rare

【分析】首先明确方框内单词的词义：factories（工厂）、rare（稀有的）、rest（剩余部分）、surface（表面）、salty（咸的）。再逐句分析语境匹配单词：(1)句描述水覆盖地球的表层，对应surface；(2)句说明海水不适合饮用的属性，对应salty；(3)句列举水的使用场景，对应factories；(4)句提及淡水的占比情况，对应rest；(5)句强调干净饮用水的珍贵性，对应rare。
【解析】根据句子语境与单词词义匹配：
(1) 地球表面约三分之二被水覆盖，填surface；
(2) 海水是咸的，不适合饮用，填salty；
(3) 水用于家庭、农场和工厂，填factories；
(4) 地球三分之二的淡水难获取，剩余部分大多被污染，填rest；
(5) 干净饮用水是稀有的，需要保护，填rare。
【答案】(1) surface (2) salty (3) factories (4) rest (5) rare
【知识点】英语词汇运用、词义匹配
【点评】本题为基础词汇填空题，考察学生对常用单词词义的理解及结合句子语境选词的能力，属于英语基础题型。
【难度系数】0.8