The purpose of the three－year study is to______.A．find out why some children find it diffi
已帮助 人
The purpose of the three-year study is to______.
A．find out why some children find it difficult to go to sleep
B．learn more about the link between sleep and weight
C．identify the ways parents reduce their kids" weight
D．see if there is difference in sleep patterns over the period
请帮忙给出正确答案和分析，谢谢！
-
正确答案：B
细节题。根据“Inotherwords，ithasn’tbeenclearwhetherkidswhoweightoomuchhavetroublesleeping，orwhethersleepinglessleadstoweightgain．”和“Togetabetterideaofwhichcauseswhich．theresearchersinterviewedtheparentsof785thirdgradersfromaroundthecountry．”可知，为时三年的研究主要是为了弄清楚究竟是睡眠少导致肥胖，还是肥胖导致睡眠不足，即该研究的主要目的是了解睡眠与肥胖之间的关系，因此[B]为答案。