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2.Salt is a must-have seasoning in our homes.But having too much of it may cause health problems,from strokes to heart disease.So should we just give it up?Well,for salt lovers who also like to look after their health,the good news is that Japanese scientists (25)have given(give) us a guilt-free way of enjoying the seasoning.They've created an electric salt-flavored fork.The Electro Fork,which (26)canrun for six hours without charging,can give food a salty taste.It was developed by Tokyo University (27)aspart of the No Salt Restaurant project,(28)whichaims to offer low-salt or salt-free food.The restaurant opened its doors for a trial on April 10.How do you get to taste salt?All you have to do is to press the button on the fork.Then it releases (29)anelectrical current,which stimulates your tongue.In addition to stimulating the tongue (30)to make(make) you taste saltiness,this device can also be used to make you taste sourness.It is based on the fact(31)that a human tongue feels salty or sour when electricity (32)is applied(apply) to it,according to The Telegraph newspaper.

分析 本文主要介绍了日本的科学家们发明咸味电子叉的原因,咸味电子叉的特点,使用方法以及工作原理等.
由于食用过多的食用盐会给人们的健康带来威胁,因此为了倡导人们食用低盐或无盐的食物,日本东京大学的科学家们发明了一种咸味电子叉.该电子叉在不用充电的情况下,可以运行6个小时;只要按下按钮,它就会释放出一股电流来刺激舌头,从而使其尝到咸味或是酸味.

解答 答案:
25 have given   考查现在完成时的用法     根据上文提出的:食用过多的盐会引起中风或是心脏疾病,人们要不要放弃食盐的问题;而此处表达的是解决该问题的方法,表示对现在存在的影响即:人们有了这种方法,就可以无负罪感的享受该调料了;故填 have given  
26 can             考查情态动词的用法     根据下一句"can give food a salty taste"可知,此处介绍的应是该电动叉的功能:在不用充电的情况下,它可以运行6个小时;故填 can    
27 as              考查介词的用法      介词as:作为; 本句的意思是:它是由东京大学作为非盐餐厅项目的一部分开发的;故填as
28 which        考查考查非限定性定语从句的用法    根据句意以及空缺处之前的逗号可知,此处是非限定性的定语从句;先行词是part of the No Salt Restaurant project非盐餐厅项目的一部分;故填关系代词which
29 an             考查不定冠词的用法   本句介绍的是该电动叉的使用原理,意为:然后它释放出一股电流;此处用在名词短语"electrical current"之前,表示泛指;由于electrical的首字母e的发音为元音/i/;故填an
30 to make      考查固定短语的用法     固定短语stimulate sb./sth.to do;激励某人做某事; 刺激某物…;此处的意思是:刺激舌头使你尝到咸味;故填 to make  
31 that            考查同位语从句的用法    根据句意可知,该句作the fact的同位语,是同位语从句;故填连接词that
32 is applied   考查一般现在时态的被动语态的用法   名词electricity在when引导的时间状语从句中作主语,与动词apply构成被动关系;根据上文使用了一般现在时,并且此处描述的是客观事实可知;这里应使用一般现在时态的被动语态;故填 is applied

点评 本题主要考查了各种语法在短文中的具体运用.做本题时,需要在正确理解短文的前提下,逐句分析句意以及所考查到的语法现象;因此在平时的学习中,应熟练掌握各种语法知识,其中包括词法,句法,各种时态语态以及虚拟语气等.

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