阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

In much of Asia，especially the so－called “rice bowl” cultures of China，Japan，Korea，__1__Vietnam，food is usually eaten with chopsticks.

Chopsticks are usually two long，thin pieces of wood or bamboo.They can also be made of plastic，animal bone or metal.Sometimes chopsticks are quite artistic.Truly elegant chopsticks might__2__(make)of gold and silver with Chinese characters.Skilled workers also combine various hardwoods and metal __3__(create)special designs.

The Chinese have used chopsticks for five thousand years.People probably cooked their food in large pots, __4__(use)twigs(树枝)to remove it.Over time，__5__the population grew，people began cutting food into small pieces so it would cook more quickly.

Food in small pieces could be eaten easily with twigs which__6__(gradual)turned into chopsticks.

Some people think that the great Chinese scholar Confucius，__7__lived from roughly 551 to 479 B．C.，influenced the__8__(develop)of chopsticks.Confucius believed knives would remind people of killings and __9__(be)too violent for use at the table.

Chopsticks are not used everywhere in Asia.In India，for example，most people traditionally eat __10__their hands.

【语篇导读】　本文是一篇说明文，主要介绍了亚洲一些国家中的吃饭工具筷子。

1．and　[考查连词。China, Japan, Korea, Vietnam是并列关系。]

2．be made　[考查语态。根据句意筷子是被制造的。]

3．to create　[考查动词不定式。作目的状语。]

4．using　[考查分词。现在分词作状语。]

5．as/when　[考查连词。as/when“当……时，随着……”。]

6．gradually　[考查副词。此处应用副词修饰动词。]

7．who　[考查定语从句。后面是非限制性定语从句，先行词指人，故用who。]

8．development　[考查名词。此处应用名词作动词的宾语。]

9．were　[考查时态和动词的数。此处were是与would remind 并列的谓语动词。]

10．with　[考查介词。固定短语：with one’s hands 用某人的手。]