首页
登录
职称英语
You should spend about 20 minutes on this task. The diagrams below show
You should spend about 20 minutes on this task. The diagrams below show
游客
2024-01-09
26
管理
问题
You should spend about 20 minutes on this task.
The diagrams 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 comparisons where relevant.
Write at least 150 words.
选项
答案
The first diagram shows that there are four main stages in the life of the silkworm. First of all, eggs are produced by the moth and it takes ten days for each egg to become a silkworm larva that feeds on mulberry leaves. This stage lasts for up to six weeks until the larva produces a cocoon of silk thread around itself. After a period of about three weeks, the adult moths eventually emerge from these cocoons and the life cycle begins again.
The cocoons are the raw material used for the production of silk cloth. Once selected, they are boiled in water and the threads can be separated in the unwinding stage. Each thread is between 300 and 900 meters long, which means they can be twisted together, dyed and then used to produce cloth in the weaving stage.
Overall, the diagrams show that the cocoon stage of the silkworm can be used to produce silk cloth through a very simple process.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3348156.html
相关试题推荐
OUTSKIRTS:TOWN::A、wine:gobletB、leaf:plantC、shoulder:thoroughfareD、wing:heli
Peopleshouldnottakegoodconstitutionforgranted,forhumangeneticcodeis
OUTSKIRTS:TOWN::A、wine:gobletB、leaf:plantC、shoulder:thoroughfareD、wing
African-Americanfilmmakersshouldbeinanenviableposition,fors
African-Americanfilmmakersshouldbeinanenviableposition,fors
SASH:WAIST::A、sock:handB、fringe:ankleC、ring:wristD、epaulet:shoulder
MEETING:MINUTES::A、video:imageB、report:synopsisC、seism:quiverD、perfo
Hispenchantforlearninghistoryshouldprovetobe______duringhisstudiesto
Sendingarobotintospacetogatherinformationisaviableoption,butshould
Sendingarobotintospacetogatherinformationisaviableoption,butshould
随机试题
Morethantenpercentofmotorwaydeathsarecausedbydriversfallingsleep
Wedon’tunderstandwhyyouobjectto______withus.A、himcoiningB、thatheco
Theprevioussectionhasshownhowquicklyarhymepassesfromoneschoolchi
某甲与某乙已登记结婚,但未同居,也未举行婚礼。之后某甲后悔与某乙结婚,进行下列哪
新生儿在寒冷环境中代偿性产热的途径是A.内脏活动 B.蛋白质 C.肌肉收缩
未妥善保存各类旅游合同及相关文件、资料,保存期不够两年,或者泄露旅游者个人信息的
关于图片中的青铜器,下列说法不正确的是( )。 A.①是先秦时期的货币
对贷款进行分类时,要以评估借款人的还款能力为核心,把贷款的担保作为主要还款来源,
以下有关起诉与受理的说法中,哪一个符合法律及相关司法解释?A.赵强与尹丽之间的借
按新颁布的《医疗事故处理条例》规定,下述情形中,属于三级医疗事故的正确说法是()
最新回复
(
0
)