Question

19．Food sometimes gets poisoned with harmful things．A person who eats such food can get an illness called food poisoning．Food poisoning is usually not serious，but some types are deadly，The symptoms of food poisoning usually begin within hours of eating the poisoned food．Fever is one of the most common symptoms．
     Certain microorganisms （微生物） cause most types of food poisoning．Bacteria and other microorganisms can poison eggs，meat，vegetables，and many other foods．After entering the body，these tiny living things release （釋放） poisons that make people sick．
      Some chemicals can also cause food poisoning．They are often added to food while it is being grown，processed，or prepaid．For example，many farmers spray chemicals on crops to kill weeds and insects．Some people may have a bad reaction to those chemicals when they eat the crops．
      Some plants and animals contain natural poisons that are harmful to people．These includecertain kinds of seafood，grains，nuts，seeds，beans，and mushrooms．
      When people handle food properly，the risk of food poisoning is very small Microorganisms multiply rapidly in dirty places and in warm temperatures．This means that people should never touch food with ditty hands or put food on unwashed surfaces．Food should be kept in a refrigerator to stop microorganisms from gnawing．Meat needs to be cooked thoroughly to kill any dangerous microorganisms．People should also wash food covered with chemicals before eating it．Finally，people should not eat raid mushrooms or other foods that grow in the wild．Some of these foods may contain natural materials that are poisonous to humans．In addition，some types of fish can be poisonous．
      Most people recover from food poisoning after a few days of resting and drinking extra water．If people eat natural poisons，they must go to the hospital right away to have their stomachs emptied．

51．Which of the following statements is NOT true？B
A．Food when poisoned can make people sick．
B．Food poisoning means death．
C．Food poisoning comes in varieties．
D．Food poisoning can be serious．
52．We know from the passage that the symptoms of food poisoningC
A．a(chǎn)re always accompanied by a fever
B．a(chǎn)re too common to be noted
C．can be noticed within hours
D．can be ignored
53．Food poi soning can be caused by all the following EXCEPTB
A．some chemicals       B．low temperatures 
C．some tiny living things  D．certain natural materials
54．From Paragraph 5，we can learn thatD
A．mushrooms should not be eaten
B．vegetables are safer than meat and seafood
C．natural poisons are more dangerous than chemicals
D．different types of food should be handled differently
55．It can be inferred from the passage thatC
A．natural materials are safe in food processing
B．chemicals are needed in food processing
C．food poisoning can be kept under control
D．food poisoning is out of control．

Answer 1

分析 本文屬于說明文閱讀，作者通過這篇文章向我們說明了什么是食物中毒，糾正了以前人們認(rèn)為食物中毒代表死亡的錯誤觀點(diǎn)，介紹了食物中毒的原因，癥狀，以及如何預(yù)防食物中毒，告訴讀者只要按照正確方法保存食物，那食物中毒是可以被控制的．

解答 51．B  細(xì)節(jié)理解題，根據(jù)第一段Food poisoning is usually not serious，but some types are deadly，可知 食物中毒通常不嚴(yán)重，但是有些是致命的，因此食物中毒并不意味著死亡，故選B．
52．C  細(xì)節(jié)理解題，根據(jù)第一段The symptoms of food poisoning usually begin within hours of eating the poisoned food．Fever is one of the most common symptoms．可知食物中毒的癥狀會在幾小時內(nèi)被注意到，發(fā)燒是常見癥狀之一，故選C．
53．B  細(xì)節(jié)理解題，根據(jù)第五段Food should be kept in a refrigerator to stop microorganisms from gnawing．可知食物應(yīng)該被保存在冰箱中防止微生物生成，因此低溫不會導(dǎo)致食物中毒，故選B．
54．D  推理判斷題，根據(jù)第五段When people handle food properly，the risk of food poisoning is very small Microorganisms multiply rapidly in dirty places and in warm temperatures．可知如果人們正確的處理食物那么食物中毒的幾率會非常小，可以推測出不同類型的食物應(yīng)以不同的方式處理，A項(xiàng)說得太絕對，BC在文中不能找到對應(yīng)細(xì)節(jié)，故選D．
55．C  推理判斷題，根據(jù)第五段When people handle food properly，the risk of food poisoning is very small Microorganisms multiply rapidly in dirty places and in warm temperatures．可知如果人們正確的處理食物，食物中毒的幾率就會非常小，因此說明食物中毒是可以被控制的，故選C．

點(diǎn)評 做閱讀理解時要快速的瀏覽全文，把握文章主旨大意，帶著問題回到原文，尋找細(xì)節(jié)或概括相應(yīng)的答案，最后要理清作者寫作思路．