题目内容
4．Children with autism（孤独症） have difficulty with social skills and communication．They often behave in restricted and repetitive ways and have what seem like abnormally intense interests．Autism is more common in boys than girls．What causes it is not clear．Scientists are studying genes and possible environmental influences．
Doctors usually cannot confirm a diagnosis（诊断） of autism until a child is about three years old．Rebecca Landa is a researcher at the Kennedy Krieger Institute and Johns Hopkins University School of Medicine in Maryland．Professor Landa wanted to find out what differences in development might be seen earlier．She led a new study that observed 235 babies between six and 36 months of age．
"At six months of age，the signs of some risk for developing communication and social delays，including autism，include motor delays．Like when you lay your baby on their back and you pull them by the arms gently into a seated position，the baby's head may nod back behind the shoulders，like poor head control．So that does not mean that the baby is going to have autism，but it does mean the baby needs to have some exercises to strengthen their body．And when they strengthen their body，they are better able to play with toys and engage with people，which then goes on to help them have better outcomes．"
By the time a baby is one year old，signs of possible autism include difficulty in using words and not looking eye-to-eye or reaching out to other people．By 14 months，the baby might smile less and use language less．However，Professor Landa says these signs can be so small that they might be missed during a short health exam．
"It's important for parents to stay tuned into their children's development，and if a parent is concerned about a child's development，for professionals to listen to them．"
The earlier parents notice delays，she says，the sooner they can begin doing s imple things that may help improve their child's development．For example：talking to the child about what they are doing，commenting when the child shows them something，and playing simple games that keep the child's attention．
36．What is the best title of the passage？A
A．Watching for Early Signs of Autism in Babies
B．How to Confirm a Diagnosis of Autism
C．Children with Autism Have Difficulty in Communication
D．Ways to Help Children with Autism to Recover
37．What can we learn form the third paragraph？B
A．Landa has found ways to confirm a diagnosis of autism when a baby is about six months．
B．Landa tried to find autism earlier by comparing the differences as the baby grows up．
C．Now doctors can confirm a diagnosis of autism before a child is three years old．
D．Doctors observed 235 babies either 6 or 36 months of age under the guide of Landa．
38．When a baby with signs of possible autism is a year and two months，he mayD．
A．avoid eye contact
B．have difficulty in raising his head
C．develop bad manners
D．hate to communicate with others
39．In which column could we find this passage？B．
A．Education
B．Health
C．Economics
D．Entertainment．
分析 本文属于科普说明文阅读，主要介绍了可能患有孤独症的儿童在不同的时期表现出的不同的表现．
解答 36．A 主旨大意题．根据文章三至六段内容可知本文主要叙述了不同年龄段的可能患有孤独症的孩子的不同的症状，并呼吁父母亲要及时注意到孩子的变化．故A正确．
37．B 细节理解题．根据第三段最后两句Professor Landa wanted to find out what differences in development might be seen earlier．She led a new study that observed 235 babies between six and 36 months of age．可知Landa教授通过观察6-36个月之间的孩子的情况来研究孤独症．故B正确．
38．D 细节理解题．根据第五段第二句By 14 months，the baby might smile less and use language less．可知患有孤独症的14个月的孩子笑得更少而且说话更少．也就是说他们不愿意和别人交流．故D项正确．
39．B 推理判断题．本文属于科普说明文阅读，主要介绍了可能患有孤独症的儿童在不同的时期表现出的不同的表现．属于健康保健的内容，所以最可能出现在健康保健类的内容中．故B项正确．
点评 本文是一个科教类阅读理解，题目涉及多道细节理解题，做题时结合原文和题目有针对性的找出相关语句进行仔细分析，结合选项选出正确答案．推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案，切忌胡乱猜测，一定要做到有理有据．
练习册系列答案
相关题目