题目

A Good Night's Steep Sleep plays a vital role in good health and well-being throughout your life. While you're sleeping, your brain is forming new pathways to help you learn and remember information. Although we all know the importance of getting a good night's sleep, not all of us know the best way of getting it. A sleep expert, Phil Atherton, gave some top tips for getting the most out of the night, which will leave you ready for action in the morning. According to Phil Atherton, not eating a large meal before bedtime is important for getting a good night's sleep. The time differenc学校篮球队的队长刚完成一组投篮练习，投进38个球，投失12个球，投篮的命中率的正确算式是（　　）A．38÷12×100%B．12÷38×100%C．38÷（38+12）×100%