Unit 4 ore practice

　　【学习目标】

　　掌握本重点词汇：invention, convenience, almost, hard, imagine, failure, electric, traffic, lift, electrical

　　阅读关于电的，进一步了解电在人类生活中的作用，并能结合生活实际谈谈如何节省用电。

　　【前置作业】用所给词的正确形式填空。

　　1. Electricity heats food in ovens or cools in ___________ (fridge).

　　2.Radios and televisions use electricity to bring entertainment and news to ____________ (million) of families.

　　3. In villages and on farms, _______ (electricity) machines milk the cows and chop their food.

　　4. In fact, electricitiy finds as ____________ (many ) work to do in villages as it does in cities.

　　5.When all the electricity was off, the buses and the underground ____________ (stop).

　　【堂学习】

　　1. Fill in the blanks.

　　2. Exercise D in Book A

　　1)_________________________________________________________________

　　_____________________________________________________________________2)________________________________________________________________________________________________________________________________________ 3)___________________________________________________________________ _____________________________________________________________________4)________________________________________________________________________________________________________________________________________ 5)________________________________________________________________________________________________________________________________________ 6)___________________________________________________________________ _______________________________________________________________________________

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