题目内容

【题目】中国是个多民族的大家庭,其少数民族主要分布在(  )

A.东南、东北和西北地区B.西南、西北和东北地区

C.西南、东南和东北地区D.东南、西南和西北地区

【答案】B

【解析】

我国共有56个民族,民族分布特点为大杂居、小聚居,相互交错居住,汉族地区有少数民族居住,少数民族地区也有汉族居住;汉族分布最广,主要集中在东部和中部,少数民族则主要分布在西北、西南、东北部地区,B对,ACD错。故选B。

练习册系列答案
相关题目

【题目】

You must think a computer is the best thing in the world, right? You must think it works at a super speed and can do everything? Well, it's not! In fact, the brain is much more powerful than any super computer! Think about when a glass is just about to fall off the table. Your brain controls everything that you need to do to save that glass from falling. First your eyes check out what's going on, then tell your brain, and your brain decides how quickly you need to react(反应), and then your muscles(肌肉) go into action. That is just from your brain. No computer could ever come close to that!

The brain weighs just 3 pounds, but it controls everything you do from thinking, learning, feeling even to breathing and your heart beating. Even though the brain is just 2% of your body weight, it uses around 20% of all your energy in your body. That is a lot for such a small organ(器官). There are about 100 billion tiny, tiny little cells(细胞) in your brain. There are so many that it would take you over 3, 000 years to count them all!

Your brain stops growing when you're 18, but it actually keeps on developing and learning new things. So your parents are really super smart! You won't be able to fool them! Believe it or not, your brain NEVER stops working. Even during sleeping, the brain works for longterm memory establishment. It is realized that the brain is the second organ in the body as the heart that never stops during human lives.

So everyone should be proud of such a gift of nature.

1From the first paragraph we know that ________.

A.eyes and muscles react quickly

B.the brain controls everything in your body

C.the computer is the best thing in the world

D.the brain is more powerful than any computer

2Which of the following is TRUE according to the passage?

A.The brain doesn't work during sleeping.

B.The brain is the only organ that never stops.

C.The brain keeps growing during human lives.

D.The brain keeps on developing during human lives.

3In which magazine can the passage be found most probably?

A.Business WeeklyB.MedicineC.ScienceD.Sports

4The underlined word“establishment”in the passage means“________” in Chinese.

A.储存B.形成C.空缺D.建立

5The best title for this passage is “________”

A.A Powerful Organ—Human Brain

B.How Computers Work

C.Scientists' Research

D.Human Being's Activities

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网