题目

任务型阅读理解 阅读短文, 根据短文内容回答问题及翻译画线部分的句子。 Christmas is a season to spread(传播) joy. Can we spread this joy by caring a little more about nature and going green? (1)Here are some good ideas.       Reduce the use of the decorative(装饰性的) lights. Make use of the eco-friendly(环保的)lights on the market. In this way you can save electricity. Reuse the wrapping (包装)paper to wrap the gifts. You don’t need to buy new wrapping paper every year. Also try using the same small decorations for your Christmas tree. R2．两个相同的电阻，先串联，总电阻为R串；再并联，总电阻为R并，则R串：R并是4：1．