首页
登录
职称英语
[audioFiles]2016m12s/audio_ezfj_201610_125[/audioFiles]
[audioFiles]2016m12s/audio_ezfj_201610_125[/audioFiles]
游客
2023-10-31
29
管理
问题
选项
答案
Life Span
About a century ago, the average life span for Americans was about 50 years. /Today, the typical American lives for around seventy-eight years. /What accounts for such increased longevity? /Between 1900 and 1950, inventions such as refrigeration and sewage treatment meant that/young people were able to survive longer. /Moreover, medical breakthroughs helped contain diseases/such as some fatal ones that killed many children. /These advances helped increase the average life span. /This means that future medical breakthroughs will result in even longer average life span.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3146910.html
相关试题推荐
[audioFiles]2015m7x/audio_ezfm_095_20156[/audioFiles]Br
[audioFiles]2015m8x/audio_ezfj_ezflisteningd_20157_090[/audioFiles]
[audioFiles]2015m8x/audio_ezfj_ezflisteningd_20157_087[/audioFiles]
[audioFiles]2015m8x/audio_ezfj_ezflisteningd_20157_075[/audioFiles]
[audioFiles]2015m8x/audio_ezfj_ezflisteningd_20157_074[/audioFiles]
[audioFiles]2015m8x/audio_ezfj_ezflisteningd_20157_072[/audioFiles]
[audioFiles]2015m8x/audio_ezfj_ezflisteningd_20157_055[/audioFiles]
[audioFiles]2015m8x/audio_ezfj_ezflisteningd_20157_053[/audioFiles]
[audioFiles]2015m8x/audio_ezfj_ezflisteningd_20157_025[/audioFiles]
[audioFiles]2015m8x/audio_ezfj_ezflisteningd_20157_024[/audioFiles]
随机试题
政府必须防止滥用权利的现象。Thegovernmentmustpreventtheabuseofpower.分析原译,句中的care和phenom
OldFreddoessomethingstupidhecause______.[br][originaltext]F:Wouldyoup
在下面的同义词辨析中,对“恭”和“敬”两词的词义差异表述完全正确的是()A.“恭
Whenateacherhelpsstudentsdealwitht
Thechangeinthatvillagewasmiraculou
患者女,54岁。诊断为阿米巴痢疾,遵医嘱行保留灌肠。肛管插入直肠的长度是 A.
共用题干 某家具制造厂除了在家具制造业发展之外,还通过兼并、联合等方式,使制造
()是指现金类资产与流动负债的比值。A.流动比率 B.速动比率 C.现金比
患者女,50岁。左上第二磨牙面龋深达牙本质中层。备洞时发现洞内软化牙本质少而干,
革兰阴性菌内毒素的成分是( )。A.肽聚糖(粘肤) B.磷壁酸 C.脂质双
最新回复
(
0
)