单选

Passage 2
Pottery is the name given to all kinds of pots and other tools made from clay and other minerals when they have been hardened by heat in the potter’skiln.
Pottery is one of the oldest crafts, which began to be practiced as soon as man learned to control fire, and long before the melting of metals. Pottery enabled man from very early times to make vessels for storing and cooking food, for carrying water, etc.Early vessels were shaped by hand and probably hardened in a big fire.

A great advance in pottery followed the invention of the potter’s wheel and the kiln. It is not known where the potter’s wheel was first used, but it is believed that by 3500 B.C.potters in Central Asia were using some kind of wheel. Its use spread west a
At first the wheel was nothing more than a small disc, turned round by hand.Later it was improved and could be turned round by the potter with his feet. Such a wheel was probably in use in Egypt by about 200 B.C.It was certainly still in use in Europe at
After the pots have been shaped, they are slowly baked in the kiln. This produces chemical changes in the clay which have a hardening effect. The time taken for firing pottery varies with the size of the kiln and the type of clay. It can take from 24 hour
Clay is leaking by nature. If a pottery article is to hold water, it must be “glazed”. Glaze consists of the raw materials of glass, ground together and mixed with water. The glaze is sprayed on to the pot which is then heated in the kiln again until it i
A.technicians
B.general readers
C.history students
D.art students

试题出自试卷《全国自考综合英语(二)精选练习题及答案2》

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