1 2002²-2001×2003 2 2001²-2010×2012

2002²-2001×2003
=2002²-（2002-1）（2002+1）
=2002²-2002²+1
=1
2001²-2010×2012
=2011²-（2011-1）（2011+1）
=2011²-2011²+1
=1

GDP年均增长率=[(本期GDP/基期GDP)^[1/(n-1) ] -1]*100% ^开方、n本期至基期的年数,在上例中：
1、名义GDP, 年均GDP增长率为[(27722.31/6141.03)]^[1/(11-1)]-1]*100%=16.27%
2、1978年=100,年均GDP增长率为[(4945.2/1529.2)]^[1/(11-1)]-1]*100%=12.45%

2002²-2001×2003
=2002² - (2002-1)(2002+1)
=2002² - (2002²-1²)
=1
2011²-2010×2012
=2011² - (2011-1)(2011+1)
=2011² - (2011²-1²)
=1

初二英语外研（下）Module 1测试题
一、单项选择
( )1.Our classroom is a bit untidy. Please ________ the desks and chairs.
A. tidy up B. clear away C. take up D. look up
( )2. Ling Ling loves Chinese culture very much. She has a wonderful ______ of Chinese fans.
A. collects B. collections C. collecting D. collected
( )3. The latest Harry Pot book _____ in 2006.
A. came out B. came in C. came on D. came over
( )4. There are many animals in the zoo, _____ tigers, whales, seals, and pandas.
A. for example B. are like C. such D. such as
( )5. The students have so much homework. They have to spend two hours ____ their homework.
A. do B. to do C. doing D. does
( )6. Yesterday the teacher told us the earth _____ around the sun.
A. go B. goes C. went D. to go
( )7.If there are _____trees, the air in our city will be _____ cleaner.
A. less; more B. more; more C. more; much D. much; more
( )8. —I think that China will win the World Cup one day.
—I_______. The Chinese team is becoming stronger and stronger.
A. agree B. disagree C. don’t agree D. think
( )9. Every day he makes me_______ early and __________ in the morning.
A. to get up; run B. get up; to run C. to get up; to run D. get up; run
( )10.It ______ that everyone _______ to laugh.
A. seems; loves B. seem; love C. seems; love D. seem; loves
( )11.Marry_______computer science last year.
A. studies B. studied C. will study D. is studying
( )12.In ten years, John _______an astronaut.
A. is B. will be C. was D. will
( )13.How many people _______there fifty years ago.
A. will B. were C. are D. will be
( )14.In AD 20 000,what_______the world be like?
A. is B. will C. was D. are
( )15.There is_______ meat but_______ cakes on the plate. Please have one.
A. a little; a few B. a few; a little C. few; little D. little; a few
二、补全对话 从A-G中选出能填入空白处的选项补全对话.
A、Motorola is more popular, I think. B、I want one, newer but not too expensive.
C、I have to ask for 900 Yuan. D、Can I help you?
E、What type would you like? F、My mobile phone is Motorola.
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