academicperformanceatbaselineandagainaftertwoyears.Theyalsoaskedthechildren?sparents toreportontheirkids?useofelectronicmedia. Theresearchersfoundthatwatchingtwoormorehoursoftelevisionperdayattheageof8or 9wasassociatedwithlowerreadingperformancecomparedtopeerstwoyearslater;thedifference wasequaltolosingfourmonthsoflear...
theageof60.Theratesofdeathamongparticipantsinthisgroupdidclearlyshowracialdifferences,withapproximately9% ofblacksdyingat anearlyagecomparedto6% ofwhites.There werealsodifferencesincausesofdeathbyrace. Forinstance,black men weresignificantly more likelytodieofmurderandwhitemenfromAIDS. Themostcommoncausesofdeath...
The Harvard Study of Adult Development may be the longest study of adult life that's ever been done. For 75 years, we've tracked the lives of 724 men, year after year, asking about their work, their home lives, their heal...
29、 more education.Seventy percent of them live on less than $2 per day.Their earnings are only 80 percent of those of men.They have no land though their number is large.Women and children make up 70 percent of the worlds poor.Because women often spend their money on alcohol.Because wo...
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As for bottled water, 25 to 30 percent of it comes straight from municipal tap water systems, despite the pretty nature ___51___ on the bottles that imply otherwise. Some of that water goes through additional filtering (过滤), but some does not. What’s more, bottled water is required...
The largest study of the effects of ageing(变老) on the heart has found that women’s longevity may be linked to the fact that their hearts do not lose their pumping power with age. “We have found that the power of the male heart falls by 20-25 percent between 18 and 70 years of...
Data research firm Sensor Tower showed that Xiaohongshu's US downloads surged more than 200 percent year-on-year this week and 194 percent last week. And the number is growing by the day.As many US users are feeling that TikTok’s days are numbered and could be deleted from US app ...
Data research firm Sensor Tower showed that Xiaohongshu's US downloads surged more than 200 percent year-on-year this week and 194 percent last week. And the number is growing by the day. As many US users are feeling that TikTok’s days are numbered and could be deleted from US app ...
It is a surprising fact that the population aging is particularly rapid in developing countries. For example it took France 115 years for the rate of older people to double from 7 percent to 14 percent. It is estimated to take China a mere 27 years to achieve this same increase. ...