阅读理解
    Mr. and Mrs. Brown have two children， Mike and Liz. The whole family are all busy， so they often leave notes(便条)for each other. Read these four notes of today and answer the following questions.

1）3：30pm  To Mike， Mr. Tyler rang. No football practice today. I'm going to Donna's house to play and be back at 5：00pm. Liz	2）4：00pm   To Liz， It's your turn to walk the dog. I have to do my homework after school. Remember to play with Teddy when you get home! Mike
3）6：45pm Has anyone seen my tennis shoes? I'm in my bedroom doing my homework. Mike	4）9：00pm. I saw your shoes this morning. They smelt terrible so I put them outside the back door. Good night， dears! Mum

 

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赤道平面与黄道平面的夹角约为（　　）

在少数民族中，人口最多的是（    ）