Day 5：任务型阅读
本文作者： 21ST
Building blocks (积木) are still one of the most popular traditional toys today. Their interesting design and easy use attract children of all ages. Most traditional toys, like building blocks, were first made of wood. Today, wooden building blocks are still used, (A) ______ now there are several other types of building blocks to choose from, like plastic (塑料的) building blocks. |  |
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