放学后，小明从学校出发，先向____走，再向____走，接着向____走，跟着向____走，最后向____走，就可以回到小明家了．

下列说法正确的是(    )

I can't find my watch. But it must be _____ in this room.

根据短文内容，选择正确答案。

   Mike is seven years old now and begins(开始) to go to school. His father is a driver and takes him to school in his car. Mike studies very hard(努力地) and all his teachers like him very  much.
   One day, Miss White teaches the students to count from one to ten. Mike can count them. Miss White is happy and asks him, “How many people(人) are there(有) in your family, Mike?”
“Two, Miss White, ” Mike says.
“Who are they?”
“My father and mother.”
“Oh?” Miss White is surprised(吃惊地). She says, “But I think there are three people in your family—your father, your mother and you. Am I right?”
“No. I'm not at home now. I'm at school, you know!” Mike says.

阅读短文，完成练习。
永远的红色梦想
——人类探索火星历程回顾
    火星是距离地球最近的行（xíng háng）星，这个红色星球承载(zǎi zài)着人类无数的遐想和希望。1877年8月，意大利天文学家斯基帕雷利在观测火星时认为火星表面的许多细线可能是人工运河，从此有关“火星生命”的谈论通过科幻故事广为流传。1962年11月苏联向火星发射了第一个火星探测器“火星1号”，标志着人类火星之旅终于起步。40多年来，人类共计划了30多次火星探测行动，其中三分之二以失败告终，但这从未扑灭科学家探索火星的热情。2003年6月以来，各国又掀起火星探索的新一（轮  伦）热潮，美欧火星探测器“三套马车”相（继  计）升空。而科学家预测，人类很可能会在2015年左右登陆火星，这个距离地球1.9亿公里的行星离我们“越来越近”了。