10/30

 we talk about life expectancy is the average number of years to be lived by a group of people born in the same year. We talked about thing thats effect life expectancy and also where life expectancy is high, like Moraco, and where it's low, like Chad. Then we discussed crude death rate and crude birth rate (number of deaths or births per 1000). We also got into rate of natural increase- which is derived by subtracting death rate from birth rate.

评论

发表评论

此博客中的热门博文

essay for Garcia.

Garcia is a good admiral of America, government want give him a letter very emergency, so they fond Rowen a young person who can find Garcia, when he left, he didn't ask where is Garcia, we need learn some thing from Rowen, The man who obeys the command can be successful. Don't ask too much, just do it whole-heartedly. Like Rowan.Don't perfunctory, often the last person to stay is not a lazy person, is someone really good! like this book says "How can you expect them to serve others if they can't be spontaneous?" 1.don't be lazy, i need finish my homework first, then i can play some video games, i cannot fall in sleep when i study.never get up late. 2.be more friendly, in China, we say more friends, more ways to success, so if i want more friends, i need friendly to everybody. 3.write more notes about the classes. nobody can renmeber all things that teacher says, so notes are very important. 4.be nice to your parent, if you always make a war
阅读全文

1.2

Today is the first day when back to school,I’m pretty tired, because the trip flight!Today we talk about the politic Geo, it’s include State Nation and city, we know every thing is indispensable，we also talk about the rocket
阅读全文

1.6

Continue talk about the world leader, like Syria , the leader is a bad guy, the still have war now, like Israel , the most powerful person is not the president.
阅读全文