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 本文主要介紹了日本的科學(xué)家們發(fā)明咸味電子叉的原因，咸味電子叉的特點(diǎn)，使用方法以及工作原理等．
由于食用過多的食用鹽會(huì)給人們的健康帶來威脅，因此為了倡導(dǎo)人們食用低鹽或無鹽的食物，日本東京大學(xué)的科學(xué)家們發(fā)明了一種咸味電子叉．該電子叉在不用充電的情況下，可以運(yùn)行6個(gè)小時(shí)；只要按下按鈕，它就會(huì)釋放出一股電流來刺激舌頭，從而使其嘗到咸味或是酸味．

解答 答案：
25 have given   考查現(xiàn)在完成時(shí)的用法     根據(jù)上文提出的：食用過多的鹽會(huì)引起中風(fēng)或是心臟疾病，人們要不要放棄食鹽的問題；而此處表達(dá)的是解決該問題的方法，表示對(duì)現(xiàn)在存在的影響即：人們有了這種方法，就可以無負(fù)罪感的享受該調(diào)料了；故填 have given  
26 can             考查情態(tài)動(dòng)詞的用法     根據(jù)下一句"can give food a salty taste"可知，此處介紹的應(yīng)是該電動(dòng)叉的功能：在不用充電的情況下，它可以運(yùn)行6個(gè)小時(shí)；故填 can    
27 as              考查介詞的用法      介詞as：作為； 本句的意思是：它是由東京大學(xué)作為非鹽餐廳項(xiàng)目的一部分開發(fā)的；故填as
28 which        考查考查非限定性定語從句的用法    根據(jù)句意以及空缺處之前的逗號(hào)可知，此處是非限定性的定語從句；先行詞是part of the No Salt Restaurant project非鹽餐廳項(xiàng)目的一部分；故填關(guān)系代詞which
29 an             考查不定冠詞的用法   本句介紹的是該電動(dòng)叉的使用原理，意為：然后它釋放出一股電流；此處用在名詞短語"electrical current"之前，表示泛指；由于electrical的首字母e的發(fā)音為元音/i/；故填an
30 to make      考查固定短語的用法     固定短語stimulate sb．/sth．to do；激勵(lì)某人做某事； 刺激某物…；此處的意思是：刺激舌頭使你嘗到咸味；故填 to make  
31 that            考查同位語從句的用法    根據(jù)句意可知，該句作the fact的同位語，是同位語從句；故填連接詞that
32 is applied   考查一般現(xiàn)在時(shí)態(tài)的被動(dòng)語態(tài)的用法   名詞electricity在when引導(dǎo)的時(shí)間狀語從句中作主語，與動(dòng)詞apply構(gòu)成被動(dòng)關(guān)系；根據(jù)上文使用了一般現(xiàn)在時(shí)，并且此處描述的是客觀事實(shí)可知；這里應(yīng)使用一般現(xiàn)在時(shí)態(tài)的被動(dòng)語態(tài)；故填 is applied

點(diǎn)評(píng) 本題主要考查了各種語法在短文中的具體運(yùn)用．做本題時(shí)，需要在正確理解短文的前提下，逐句分析句意以及所考查到的語法現(xiàn)象；因此在平時(shí)的學(xué)習(xí)中，應(yīng)熟練掌握各種語法知識(shí)，其中包括詞法，句法，各種時(shí)態(tài)語態(tài)以及虛擬語氣等．

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