初中英语广州版3A 06

[04:44.56]十亿
[04:46.04]count up to
[04:47.22]数到
[04:48.39]5.Listen and circle the phrase you hear.
[04:54.45]1.She has done a lot of things today.
[04:59.70]2.We have played together since we were children.
[05:05.14]3. They read ten books last term.
[05:10.28]4. I have studied music for many years.
[05:15.32]5.My parents grew apples,pears and potatoes last year.
[05:22.09]6.She has washed her hair today.
[05:26.03]7.The cat climbed the tree.
[05:30.40]8.He has worked hard all his life.
[05:35.07]Lesson 24
[05:37.35]importantly
[05:38.52]重要地
[05:39.70]change
[05:40.87]改变
[05:42.05]thousands of
[05:43.22]成千上万的
[05:44.40]farm
[05:45.63]种田
[05:46.85]mean
[05:47.94]意思是
[05:49.02]land
[05:50.25]土地
[05:51.48]destroy
[05:52.76]破坏
[05:54.04]A.D.
[05:55.51]公元
[05:56.99]1.Listen about China's largest cities.
[06:02.87]Fill in the table with numbers.
[06:05.51]The population of China is the largest in the world.
[06:09.87]It has more than 1.2 billion people.
[06:13.24]This's more people
[06:14.99]than there were in the world 150 years ago.
[06:18.23]Because of this,
[06:20.68]many of China's cities are very large.
[06:23.84]There're forty cities with populations of more than one million
[06:27.92]Beijing,the captial,
[06:30.48]has more than twelve million people.
[06:33.35]Guangzhou is much smaller.
[06:35.81]It has 6,660,000.
[06:39.93]Meihua is going to live in Shanghai
[06:43.10]and she is a bit worried.
[06:45.45]Shanghai is the second biggest city in China
[06:49.89]and has a population of 16,740,000.
[06:54.04]Herbin is smaller.
[06:57.88]It has 10,010,000 people.
[07:02.14]One ineresting city is Shenzhen.
[07:05.30]Twenty-five year ago,Shenzhen was a small town.
[07:09.69]Only about 30,000 people lived there.
[07:13.14]Since 1980 it has grown and grown.
[07:16.90]At the end of 1997
[07:20.84]more than 1,090,000 were living and working there.
[07:25.20]The biggest city in China is Chongqing.
[07:28.44]It has a population of 30,430,000.
[07:33.59]3.Read and answer the questions.
[07:38.76]Work with a partner.
[07:41.11]How many people do you think there're in the world today
[07:44.95]There are about six billion,
[07:48.51]and the population is still growing.
[07:51.75]Two thousand years ago,
[07:54.31]only about 250 million people lived in the world.
[07:58.67]In the next 1,700 years,
[08:02.32]the number doubled to 500 million.
[08:05.49]But only 200 years later,
[08:08.23]the world population grew to one billion.
[08:11.60]Now,the population doubles every forty year
[08:16.04]Why did the population grow very slowly in the beginning
[08:20.30]and why is it now growing faster and faster?
[08:23.77]A long time ago,
[08:26.12]many babies died when they were only a few days or weeks old
[08:30.77]If people grew up,
[08:33.12]many did not live for very long.
[08:35.58]Why?Sometimes they did not have enough food.
[08:41.04]Sometimes their food did not make them strong.
[08:44.90]But,most importantly,
[08:47.46]people became ill very easily.
[08:50.21]There were no hospitals or doctors,
[08:53.58]and people often died young.
[08:56.32]Nothing much changed for thousands of years.
[08:59.98]Then,about 200 years ago,
[09:03.45]people's lives began to get better.
[09:06.40]They began to find better ways to farm.
[09:09.75]They grew more and better food.
[09:12.70]People did not get sick as easily as before.
[09:16.36]Doctors began to learn more about what made people sick.
[09:21.32]They learned how to make people well again
[09:24.35]and so people began to live longer lives.
[09:27.69]Many more children grew up
[09:30.15]and had their own children.
[09:32.32]There were more families.
[09:35.06]More families means more people.
[09:37.62]And so the population of the world
[09:40.39]began to grow faster and faster.
[09:43.24]But wha'll happen if the population doesn't stop growing?
[09:48.38]More people means more factories and more roads.
[09:52.74]The water in our rivers'll become too dirty to drink.
[09:56.61]The air will become dirtier,too.
[09:59.67]We'll not be able to live.
[10:02.02]We'll have to use farm land to build houses.