2. 职称英语
  3. [audioFiles]2017m5s/audio_ezfj_185_201705[/audioFiles] The Importance of Cal

[audioFiles]2017m5s/audio_ezfj_185_201705[/audioFiles] The Importance of Cal

游客2024-09-14  61
问题  
选项
答案     The Importance of Calcium
    Calcium is a mineral that helps build strong bones and teeth and regulates muscle contraction. / Milk and dairy products have long been held as an important source of calcium. /Calcium can continue strengthening your bones / until the age of 20 to 25 when peak bone mass is reached. / After this point, your bones can only maintain or lose their density / and grow weaker as a natural part of the ageing process. / Inadequate dietary calcium intake before this age / can increase the risk of brittle bone disease, / as calcium is drawn from the bones as a reserve. /
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/3757605.html
相关试题推荐
随机试题
最新回复(0)