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考研英语阅读模拟练习题2 You hopinto yourcar,but,wait,where arethe keysYou meetsomeone new,but hername isgone beforethe handshakesover.Those arefailures ofyour short-term,or“working,”memory——the placeyou fileinfor___tion forimmediate,everyday retrieval.It isntperfect.But researchersare increasinglyconvinced that the hormoneestrogen couldplay akey rolein___intaining andperhaps evenimproving memory.Last weeka teamof Yalescientists provideddra___tic newevidence thatbolsters thetheory.Using MRIs——detailed snapshotsof thebrain——researchers foundthat womentaking estrogenshow significantlymore activityin brainareas associatedwith memorythan womenon aplacebo.“This isvery exciting,”says YalesDr.Sally Shaywitz.“It meansthatthebrain circuitryfor memoryhad altered.” After menopause,when estrogenlevels plummet,some womenbee forgetful.Past researchhas demonstratedthat thosewho takeestrogen dobetter onmemory teststhan th...。