we need to know h_____to compare the prices of things in different shops

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• we need to know h_____to compare the prices of things in different shops
• 这片英语阅读 感激不尽There are many things we need to know that we do not learn at school61.In the passage “careful shopping” means _______.A.going to lots of different shops \x05\x05B.comparing prices and brandsC.comparing shops\x05\x05\x05\x05D.going to sensible shops62.According to the passage life skills can make us _______.A.get to school early \x05\x05\x05\x05 B.know how to make choicesC.live useful and happy lives \x05\x05\x05D.go shopping 63.The underli
• The government lost a great deal of ___because of the constant increase in food prices
• 已知f（x）=x-2（x的算术平方根）+m,当0≤x≤9时,f（x）≤4恒成立,则实数m的取值范围是