Question

20．Lead poisoning （鉛中毒）occurs when lead is present in high levels in the blood of a person．It is one of the most common medical problems found in children．And it's important to recognize the presence of lead in children's bodies because lead is very harmful．
Children have the tendency to go around and put things in their mouths like paint peelings．This is one of the main causes of lead poisoning．It has also been found that children born in poor families have higher chances of getting exposed to lead．
Some of the common symptoms of lead poisoning in children are headaches，stomach pains，hair loss，muscle weakness，and weight loss，etc．
Lead poisoning can have severe effects and can lead to heart diseases，kidney diseases and neurological（神經(jīng)系統(tǒng)的）problems．It can also result in mental dullness and a low I．Q．level．There have been cases where lead poisoning proved to be terminal for children．
It's difficult to easily recognize whether a child is affected by lead poisoning，as the symptoms of this disease can occur due to some other medical problems．Therefore，children under the age of 6should regularly be checked to know the level of lead in their blood through blood tests．It's possible to completely cure a child with lead poisoning through treatment．Usually the oral medicine chelator（螯合劑）is given to the children．Sometimes，children are given an injection（注射）for reducing the lead level．Children who have very high level of lead in their blood would need treatment for a long period of time and would also be put on a special diet．
Parents have to take certain precautions to lower the chance of lead poisoning in children．Cleaning the house regularly and removing shoes at the door after coming in form outside will prevent the lead particles from entering the house．Children should be put on a healthy diet，containing high proportions（比例）of calcium and iron，such as eggs，milk，fruits，potatoes，etc．
Which helps to keep the lead levels in control，in the children's bodies．
In short，it's a must to be cautious and careful，and protect your children from the horrible consequences of lead poisoning．

Lead Poisoning in Children（71）Causes． •Children's going around and putting things in their mouths． •High chances of（72）bloodlead． （73）Symptoms •Headaches，stomach pains，hair loss，muscle weakness，and weight loss，etc． Effects•Lead to heart diseases，kidney diseases and neurological problems． •（74）Effectsmental dullness and a low I．Q．level． Treatment•Make children take the chelator or（75）receive/getan injection to reduce the lead level． •Put children with a very high lead level on （76）a special diet （77）Suggestions/Preventions •（78）Cleaning the houseregularly and remove shoes at the door after coming in from the outside． •Let children eat healthy food which contain（79）highof calcium and iron． （80）protect your children •You must be cautious and careful to protect your children from lead poisoning．

Answer 1

分析 鉛中毒是兒童中常見的疾病，辨別兒童體內(nèi)鉛的含量十分重要．本文講述了鉛中毒對兒童的危害，呼吁家長要謹慎，保護孩子免受鉛的危害．

解答 71．Causes                      72．blood                  73．Symptoms                 74．Effects              75．heart diseases             76．a(chǎn) special diet               77．Prevention/suggestion   78．Cleaning the house     79．high                    80．protect your children
71．（Main） Causes/Reasons 考查信息查找能力．該空缺處是小標題，首字母要大寫；根據(jù)第二段的"This is one of the main causes of lead poisoning．"可知該段講述的是導(dǎo)致兒童鉛中毒的原因，故填（Main） Causes/Reasons．
72．blood 考查信息的定位能力．由第五段children under the age of 6should regularly be checked to know the level of lead in their blood through blood tests，6歲以下的兒童應(yīng)定期檢查血液知道血鉛水平．可知鉛中毒使血鉛水平提高．故填blood．
73．Symptoms 考查歸納概括能力．該空缺處是小標題，首字母要大寫；根據(jù)第四段的"Lead poisoning can have severe effects and can lead to heart diseases，kidney diseases and neurological （神經(jīng)系統(tǒng)的） problems．"可知該段講述的是鉛中毒對人體的影響，歸納概括為Symptoms，癥狀，故填Symptoms．
74．Effects 考查同義詞的轉(zhuǎn)換．第四段的"It can also cause mental dullness and a low IQ level．"它也會導(dǎo)致精神低沉和低情商．表明該空缺處要填cause的同義詞Effects，故填Effects．
75．receive/get 考查信息的定位能力．分析句子結(jié)構(gòu)可知空缺處作children的補足語，在動詞make后，要用動詞原形；根據(jù)第五段的"Sometimes，children are given an injection （注射） for reducing the lead level．"可知該處要用動詞get或receive代替本句中的are given，故填receive/get．
76．a(chǎn) special diet 考查信息定位能力．根據(jù)第五的段"Children who have very high level of lead in their blood would need treatment for a long period of time and would also be put on a special diet．"可知該處的答案，故填a special diet．
77．Conclusion/Summary 考查歸納概括能力．該空缺處是小標題，首字母要大寫；最后一段的"In short，"表明這是對文章內(nèi)容的總結(jié)，用conclusion或summary表示，故填Conclusion/Summary．
78．Cleaning the house．考查信息的定位能力．由倒數(shù)第二段原句Cleaning the house regularly，定期打掃房間，可知此處填Cleaning the house．
79．high proportions  考查信息的定位能力．由最后一段containing high proportions（比例）of calcium and iron，包含高鈣和高鐵的食物，可知此處填high proportions．         
80．protect your children 考查信息的定位能力．最后一段的"protect your children from the horrible consequences of lead poisoning"表明了該處的答案為protect your children，故填protect your children．

點評 本篇閱讀較為簡單．除了總結(jié)性的概括之外，許多空都在原文中句子有照應(yīng)，直接填出所缺即可．考生可以抓住關(guān)鍵詞跳讀作答．