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剑6 TEST3
The diagram below show the life cycle of the silkworm and the stages in the
production of silk cloth. Summarise the information by selecting and reporting
the main features,and make comparison where relevant.
范文：
The diagram shows the life cycle of silkworms and the process of making
silk cloth.
The life cycle is divided into several particular developing stages. It
starts when a moth produces her eggs on the mulberry leaves. After ten days the
eggs grow into silkworm larva, whose foods are the mulberry leaf. The second
stage ends. In the following four to six weeks, the larva will generate silk
threats which cover the larva. This is the third stage. The fourth stage lasts
for three or eight days during which cocoon is formed. 16 days after the
formation of the cocoon, a moth finally comes out of the cocoon. A new cycle
starts.
The production of the silk cloth consists of numerous steps. The first is
to select cocoons, which then are heated in boiled water. After the heat
treatment, the cocoon is ready to be decomposed into threads ranging from 300 to
900 meters in length. The second is to twist the thread together. To dye is the
third. After this process, silk cloth is woven. |
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发表于 2016-7-10 15:21:24