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若不等式x＜ m的正整数解有1,2,3， 则m的取值范围是         。

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题目分析：若不等式x＜ m的正整数解有1,2,3，因为不等式x＜ m中x取不到m,所以，又因为不等式x＜ m的正整数解有1,2,3，最大是3，取不到4，所以，因此m的取值范围是

点评：本题考查不等式，考生在解答本题时要掌握不等式的解法，并理解什么是整数解，从而正确的解答本题

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若两个相似多边形的周长分别为40cm和70cm，面积的和为65cm2，则较小多边形的面积为______cm2．
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                                               Environment Awareness Week
Regal Convention Center, Halls 1-4
24-30 March 2011 10:00 am- 9:00 pm 
Free admission for all!
Save the environment, save our future
     Our environment needs help. With the participation of more than 50 organization, Environment
Awareness Week is the biggest public education event dedicated to environmental protection and
conversation. Don't miss it! Come and know more about:
The Threats to Earth(Hall 1)
     What is global warming? How serious is pollution? Learn about different environmental problems
from our university students. Protect our environment!
The Search for Renewable Energy(Hall 2)
      Can we get electricity from mind, solar energy, waves, rivers and underground heat? Get the
answers from Solar Ace, Teflou, TouchWind Resources and other participants.
The Quest for Freshwater (Hall 3)
     Is the shortage of freshwater worsening? What are Singapore's solutions for treating wastewater? Hear from Flow Technologies, HydroMax Solutions and other participants.
The 3 Rs to Save Earth(Hall 4)
     How can we REDUCE,REUSE and RECYCLE to cut down household wastes? Find out from
the Global Gaia work, Green Earth Foundation and other participants.
     For more information, please call Mr. Philip Koh at 6553 1188, send an email to Mrs Daisy Soh
at daisy-soh@ief.org or visit the event's web site at http://www.ief.org/eaw.
1. The main aim of Environment Awareness Week is to _____.
A. learn about renewable energy sources that protect the environment
B. explain ways for producing freshwater to save the environment
C. discuss global warming and other environmental problems
D. educate the public on protecting the environment
2. If you are interested in renewable energy sources, you should go to _____.
A. Hall 1
B. Hall 2
C. Hall 3
D. Hall 4
3. Which of the following statements is NOT true of the event? 
A. Each hall charges the same amount of money as the other.
B. You can send an email to Mrs. Daisy Soh for more information.
C. It will last a week and the halls will be open 11 hours a day.
D. Lectures in Hall 1 will be given by university students.
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