6．Avocado（牛油果） imports soar as Chinese develop taste for"butter fruit"China's soaring appetite for avocados，driven by demand from its health-conscious middle class，has made the"butter fruit"-unheard of a few years ago-the country's star performer in the （21）imported （import） fruit market．
Exports from Latin American nations such as Mexico and Chile are rising by about 250 per cent a year，（22）leaping （leap） from just 154 tonnes in 2012 to more than 25，000 tonnes in 2016．
"More people are paying attention to healthy lifestyles and avocados meet that need，"said Zhang Hui，a sales manager at Fruitday，an online food delivery company．
Even western fast-food brands such as KFC and McDonald's are being forced to suit the changing tastes of their consumers．
Yum China，which （23）operates （operate） 5，000 KFC stores in the country，last month launched an"avocado series"of chicken burgers and wraps slathered with guacamole（鳄梨色拉） to help upgrade the image of （24）its fried chicken chain，sourcing the fruit from Mexico．
"Avocado is viewed as a fruit （25）whose nutritional value eclipses that of many other fruits，"said Joey Wat，Yum China's chief operations officer．A planned three-week avocado promotion ended early due to high demand．
China has almost no experience （26）in commercial avocado cultivation，meaning imports are likely （27）to dominate （dominate） the market for years．
In 2011，Mexico began exports to China，where the avocado was still"（28）a very rare fruit"，according to Alejandro Salas，a Mexican trade commissioner in Shanghai．He predicts that Chinese demand will help Mexico diversify away from the US，its top market．"This market will be the second （29）largest （large）"he said．
Mexican officials have held events to promote the fruit，teaching chefs about avocado and tofu smoothies-but last year the country was overtaken by Chile as the dominant exporter to China．Chile has the advantage of a free-trade agreement with China，（30）while/but Mexican fruit imports have a 10 per cent tariff（关税）．
分析 本文讲述了由于中国对一些健康食品的需求增大，导致其他国家对此有了广阔的发展市场，各个国家由此从中获得了经济上的利益，从而促进了世界经济的发展．
解答 21．imported；考查词性辨析．此句意为中国在进口水果市场上的明星表演者．由in the 可知此处为形容词，故填imported．
22．Leaping；考查主谓关系．此句意为墨西哥和智利等拉美国家的出口每年增长约百分之二百五十，从2012年的154吨上升到2016年的25000吨以上．此处的‘上升'与前文的‘拉美国家'之间为主动关系，故填leaping．
23．operates；考查复数形式．此句意为百胜餐饮集团（百胜中国）上月在中国经营了5000家肯德基门店．由后文的5000家门店可知要用复数，故填operates．
24．its；考查代词．此句意为并将slathered与鳄梨调味酱包起来，以帮助提升炸鸡连锁店的形象．由此可知此处的炸鸡连锁店是属于百胜餐饮集团的，故填its．
25．whose；考查主语从句．此句意为鳄梨被认为是一种营养价值超过其他水果的水果．此句为主语从句，从句部分缺少主语，所以用引导词whose，修饰前面的fruit，故填whose．
26．in；考查介词．此句意为中国在商业鳄梨种植上几乎没有经验．此处的'商业鳄梨种植‘指的是一个大概念，所以要用介词in，故填in．
27．to dominate；考查固定搭配．此句意为这意味着进口在市场上有几年的优势．be likely to do sth．意为极有可能做某事，故填to dominate．
28．a；考查冠词．此句意为墨西哥开始向中国出口鳄梨，鳄梨仍然是"非常稀有的水果"．此处为a…fruit，故填a．
29．Largest；考查形容词的最高级．此句意为中国的需求将帮助墨西哥从其高端市场中的美国多样化．"这将是第二大市场"．前文有the可知此处要填最高级，故填largest．
30．while/but；考查连词．由前文Chile has the advantage of a free-trade agreement with China可知智利与中国有着自由贸易协定的优势，而后文while Mexican fruit imports have a 10 per cent tariff可知墨西哥的水果进口则有10%的关税．两处之间为转折关系，所以此处要填表示转折关系的词，故填while/but．
点评 解答此类题目，首先需要通读全文，掌握文章大意；其次分析每一个空格前后的语意和语境，进而根据相关语法选择正确的答案．
