题目内容
Nowadays, we don't have enough resources to use. So it's everyone's duly to save them for the future. To save resources, we should____.
①throw away a pencil without completely using it
②collect waste things for recycling
③go to school by kike instead of by car
④turn off the tap while brushing our teeth
⑤keep the lights on day and night
A . ①②⑤ B . ②③④ C. ②④⑤
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