This morning Jenny, Linda, Mary, Alice and Sally found five bags. Jenny found a brown bag in Classroom 208. In the bag is ____. Linda found a purple bag in Classroom 306.In the bag is ____. Mary found a green bag in Classroom 409.In the bag is ____.Alice found a red bag ____.In the bag is a yellow pencil. Sally found a blue bag ____.In the age is a watch.

定义在R上的奇函数f（x），当x≥0时，

f（x）=$\left\{\begin{array}{c}{\log }_{\frac{1}{2}}\left(x+1\right),x\in 0,1)\\ 1-\left|x-3\right|,x\in 1,+\infty )\end{array}\right.$，

则关于x的函数F（x）=f（x）﹣a（0＜a＜1）的所有零点之和为（　　）

荆州市某球迷2013年6月7日早上9点 (北京时间)坐在电视机前观看NBA总决赛第一场(热火-马刺)直播比赛，他看见球场夜空星光闪烁，这使他百思不得其解。我们这里是白天，美国为什么还是夜晚呢？下列解释，你认为正确的是(    )