14．Clenching（握緊） your fist could be enough to help you get a grip on your memory．
Research suggests that balling up the right hand and squeezing it tightly actually makes it easier to memorize lists．
Later，when it is time to get back the information，it is the left hand that should be clenched．It is thought the movements activate （刺激）brain regions key to the storing and recall of memories．
The American researchers suggest those who are short of a pen and paper should try the trick when attempting to remember a shopping list or phone numbers．
In the study，volunteers were given a rubber ball and asked to squeeze it as hard as possible before trying to memorize a list of 72words．They squeezed the ball again a couple of minutes later，ahead of recollecting as many of the words as possible．
The first group of the volunteers used their right hand on both occasions，and the second group their left．The third group clenched their right fist ahead of memorizing and their left ahead of recall and the fourth did the opposite．The fifth group held the ball but did not squeeze it．
Those who squeezed with their right hand，followed by their left，remembered the most words．The next best were the volunteers who made a fist with their right hand both times，while those who didn't squeeze at all did better than those who did with their left．
It is thought that the movement of clenching the right fist activates a brain region that is involved in storing memories，while squeezing the left hand awakens an area that is key to getting back information．
Lead researcher Dr．Ruth Propper said：‘The findings suggest that simple body movements--by temporarily changing the way the brain functions--can improve memory．'
29．If you want to recall something in your memory，you should clenchB．
A．your right hand
B．your left hand
C．both of your hands
D．your left hand first，and then right
30．The underlined word trick in the fourth paragraph is the closest in meaning toA．
A．method B．game C．cheat D．experiment
31．Which group in the experiment remembered the fewest words？C
A．The first group
B．The second group
C．The fourth group
D．The fifth group
32．Which of the following can be the best title for the passage？D
A．Memory experiments on body movements
B．What is a good memory？
C．Good memory lies in actions
D．Clenching hands improves the memory．
分析 本文屬于說明文閱讀，作者通過這篇文章主要向我們描述了研究表明，握緊你的拳頭可以幫助你控制你的記憶．
解答 29．B．細(xì)節(jié)理解題．根據(jù)第三段Later，when it is time to get back the information，it is the left hand that should be clenched可知握緊你的左手可以幫助你回想你的記憶；故選B．
30．A．詞義猜測題．根據(jù)第四段The American researchers suggest those who are short of a pen and paper should try the trick when attempting to remember a shopping list or phone numbers可知美國研究人員建議那些缺少鋼筆和紙張的人在試圖記住購物單或電話號碼時應(yīng)該嘗試一下；意為方式；故選A．
31．C．推理判斷題．根據(jù)第七段while those who didn't squeeze at all did better than those who did with their left可知握緊左手的人的記憶力最差；故選C．
32．D．推理判斷題．根據(jù)最后一段The findings suggest that simple body movements--by temporarily changing the way the brain functions--can improve memory可知文章最好的標(biāo)題是握緊右手可以改善記憶；故選D．
點評 考察學(xué)生的細(xì)節(jié)理解和推理判斷能力，做細(xì)節(jié)理解題時一定要找到文章中的原句，和題干進(jìn)行比較，再做出正確的選擇．在做推理判斷題不要以個人的主觀想象代替文章的事實，要根據(jù)文章事實進(jìn)行合乎邏輯的推理判斷．
