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At the dinner table，Westerners use knives and forks，while the Chinese use chopsticks.Since 3，000 years ago，chopsticks （1）

have become

have become

the eating tool for Chinese people.During the Pottery Age（陶器時(shí)代），ancient Chinese people used pottery pots （2）

to cook

to cook

.And they used branches or bamboo sticks to pick up the food.Later on，they developed the habit of using the chopsticks. （3）

Generally

Generally

，the materials of chopsticks can be divided into five groups：bamboo and wood，metal，jade，bone and chemical plastics.Today，people prefer to use the bamboo or wooden chopsticks because they are （4）

friendly

friendly

to the environment and cost a little.
    Using knives and forks or chopsticks brings about a difference in lifestyle.The use of knives and forks makes it much （5）

more convenient

more convenient

for people to eat individually（單獨(dú)地）.And the use of chopsticks makes it possible for people to have meals together with（6）

their

their

family members.As the Westerners prefer to eat individually，they have the idea and habit of not depending on others after they grow into （7）

adults

adults

.The way that Chinese people use chopsticks （8）

is connected

is connected

with the lifestyle of the Chinese family.They like eating with others around the table.
    Nowadays，an increasing number of foreign students （9）

come

come

to China.They are happy to learn to use chopsticks and enjoy the （10）

pleasure

pleasure

of eating with friends.Chopsticks are going out into the world.