这一天最有可能是（　　）

                                                                                Just a Quick Nap 只要打个盹儿
      Do you feel a little sleepy after lunch? Well, that's normal. Your body naturally slows down then. What should you do about it? Don't reach for a coffee! Instead, take a nap.
       It's good to have a daily nap. First of all , you are more efficient（有效的） after napping . You remember things better and make fewer mistakes. Also, you can learn things more easily after taking a nap. A nap may increase your self-confidence（自信） and make you more active . It may even cheer you up. But, there are some simple rules you should follow about taking a nap. First, take a nap in the middle of day, about eight hours after you wake up. Next, a 20-minute nap is best. If you sleep longer, you may fall into a deep sleep. After waking from a deep sleep, you will feel worse. Also, you should set an alarm clock. That way, you can fully relax during your nap. You won't have to keep looking at the clock so you don't oversleep.
       Now，the next time you feel sleepy after lunch , don't get stressed . Put your head down, close your eyes, and catch forty winks.

北京时间2016年10月17日7时30分，“神州十一号”载人飞船发射升空，并顺利与“天宫二号”对接，于11月18日安全返回。读组合体绕地球运行轨道示意图，完成下列各题。