16．Whether we're 2 years old or 62，our reasons for lying are mostly the same：to get out of trouble，for personal gain and to make ourselves look better in the eyes of others．But a growing body of research is raising questions about how a child's lie is different from an adult's lie，and how the way we deceive changes as we grow．
"Parents and teachers who catch their children lying should not be alarmed．Their children are not going to turn out to be abnormal liars，"says Dr．Lee，a director of the Institute of Child Study．The fact that children tell lies is a sign that they have reached a new developmental stage．Dr．Lee conducted a series of studies in which they bring children into a lab with hidden cameras．Children and young adults aged 2 to 17 are likely to lie while being told not to look at a toy，which is put behind the child's back．
For young kids，the desire to cheat is big and 90% take a secret look in these experiments．When the test-giver returns to the room，the child is asked if he or she looked secretly．At age 2，about a quarter of children will lie and say they didn't．By 3，half of kids will lie，and by 4，that figure is 90%，studies show．
Researchers have found that it's kids with better understanding abilities who lie more．That's because to lie you also have to keep the truth in mind，which includes many brain processes，such as combining several sources of information and faking that information．The ability to lie-and lie successfully-is thought to be related to developme nt of brain regions that allow so called"executive functioning"，or higher order thinking and reasoning abilities．Kids who perform better on tests that involve executive functioning also lie more．
29．What's the purpose of children telling lies？B
A．To help their friends out．
B．To get rid of trouble．
C．To get attention from others．
D．To create a popular image．
30．From the second paragraph we can know thatC．
A．which factors can reduce lying
B．why some lie more than others
C．it is normal for kids to tell lies
D．how lying changes as kids grow
31．It can be inferred from the passage thatC．
A．children's lies are the same as adults'
B．the better kids are，the more they lie
C．the older kids are，the more they lie
D．kids always keep the truth in their mind
32．What is NOT included in the passage？D
A．The reasons why kids tell lies．
B．Which kind of kids tells more lies．
C．Experiments about lying of young kids．
D．What to do with lying children．
分析 無論我們是2歲還是62歲，我們?nèi)鲋e的原因大多是相同的：為了擺脫麻煩、得到好處或者是為了讓我們在別人眼里變得更好．文章主要介紹了孩子說謊的原因、哪些孩子說謊多及關于孩子說謊的實驗．
解答 29．B 細節(jié)理解題．根據(jù)第一段的our reasons for lying are mostly the same：to getout of trouble，for personal gain and to make ourselves look better in the eyes of others．可知，我們?nèi)鲋e的原因大都一樣：為了擺脫麻煩、得到好處或者是為了讓我們在別人眼里變得更好．故選B．
30．C 推理判斷題．根據(jù)第二段的The fact that children tell lies is a sign that theyhave reached a new developmental stage．可知，孩子說謊標志著他們到達了一個新的發(fā)展階段．故選C．
31．C 推理判斷題．根據(jù)第三段的At age 2，about a quarter of children will lie and say theydidn't．By 3，half of kids will lie，and by 4，that figure is 90%，studies show可知，在兩歲的孩子里，大約有四分之一的人會撒謊說他們沒有看過．三歲的孩子有一半會說謊，而到了四歲，這個數(shù)字是90%．故選C．
32．D 細節(jié)理解題．文章主要介紹了孩子說謊的原因、哪些孩子說謊多及關于孩子說謊的實驗，而D項文章沒有提到．故選D．
點評 本文是科教類閱讀，主要考查細節(jié)理解題和推理判斷題．在做細節(jié)理解題時，首先根據(jù)題目要求迅速在文章里找出相應的段落、句子或短語．認真比較選項和文中細節(jié)的區(qū)別，在做推理判斷題時不要以
