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[老师已改] 剑6 Test 3 Task 1 蚕蛹流程图 谢谢老师

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发表于 2015-7-14 10:31 | 小站托福TPO客户端

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The first diagram describes the four main stages inthe life of the silkworm. Firstly, eggs are produced by the moth and it takesten days for each egg to become a silkworm larva feeding on mulberry leaves. Thisstage lasts for up to six weeks until the lava produces a cocoon of silk threadaround itself. After about three weeks, the adult moths eventually emerge fromthese cocoons and the life cycle begins again.
During the period in the life of the silkworm, its cocoonsare the raw material used for the production of silk cloth. Once selected theyare boiled in water and the threads can be separated in the unwinding stage.Each thread could be between 300 and 900 meters long, which would be twistedtogether, dyed and then used to produce cloth in the weaving stage.
Overall, the diagrams show that the cocoon stage of thesilkworm can be used to produce silk cloth through a specific process.

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