题目内容：

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 building blocks.

Children build all kinds of things that they see in everyday life with building blocks. This gives them the chance to learn new things and life skills.

(B)积木能帮助孩子练习他们的语言。Most children talk to each other as they build things with these traditional toys. This type of toy also helps develop the skills that children need in life. As they begin to join groups playing with building blocks, they learn to take turns, to share, and to solve problems with others. However, these are not the only advantages of playing with building blocks. (C)The building blocks also help develop children’s skills in math and science. They allow children to work according to the steps of scientific discovery, (D)       are first to watch and think, and then to test. Traditional toy building blocks also come in different shapes, colors and sizes. These types of building blocks encourage children to develop skills in dividing things.(E)Playing with building blocks is not only fun but also very helpful. Maybe that is the reason why building blocks are still favorite today.

1.在短文的 (A), (D)处填入适当的单词。

  A: _______  D: _______

2.把（B）处的句子翻译成英语。

   ___________________________________.

3.把（C）处句子翻译成汉语。

___________________________________.

4.完成划线（E）处的同义句。

Playing with building blocks is ______ fun ______ very helpful.

5.根据短文内容，回答下面的问题。

What were traditional toy building blocks made of?

___________________________________.