What is the passage mainly about? According to the US National Heart, Lung and Blood Institute, the reason why older mothers’ c

admin2009-01-18  32

问题 What is the passage mainly about?
According to the US National Heart, Lung and Blood Institute, the reason why older mothers’ children tend to be obese remains ______ .

选项

答案not entirely clear

解析 根据题干中的US National Heart,Lung and Blood Institute定位至第六个小标题下第二段,再根据题干其他信息the reason why older mothers’ children tend to be obese remains,准确定位至该段最后一句:why this should be so is not entirely clear,remains与is的语法功能及意思一致,因此可填入not entirely clear。
转载请注明原文地址:https://jikaoti.com/ti/Ir7MFFFM
0

最新回复(0)