雅思 经典 summary 、Hidden history:the beetle's secret cycle of lifeThe deathwatch beetle is thought of as the devil's pest in churches and old houses,but in natural habitats it infests a wide range of decaying hardwoods.It has been found in hor

雅思 经典 summary 、Hidden history:the beetle's secret cycle of lifeThe deathwatch beetle is thought of as the devil's pest in churches and old houses,but in natural habitats it infests a wide range of decaying hardwoods.It has been found in hor
雅思 经典 summary 、
Hidden history:the beetle's secret cycle of life
The deathwatch beetle is thought of as the devil's pest in churches and old houses,but in natural habitats it infests a wide range of decaying hardwoods.It has been found in hornbeam,sweet chestnut,hawthorn,beech,ash,black popular,elm,larch ,spruce and yew; but the two most commonly infested species in Britain are oak and willow.In buildings,oak timbers are usually the focus of attack by the beetle,but alder,walnut,elm,larch and Scots pine can be affected too.Deathwatch beetles attack wood that has been decayed by fungi,so it is the damp _prone of timbers,at the ends and near leaking gutters and enclosed spaces,that are normally attacked first.;
Adult beetles emerge from holes in the timber in spring,or occasionally in autumn.They
breed once and a week or two later the females lay eggs,usually about fifty,in small cracks on the surface of the wood.Adults depend on stored reserves; they do not feed,so the adult lifespan is largely determined by body size and metabolic demands.Emergent females rarely live for more
than ten weeks,and males eight or nine weeks,at a temperature of about 20℃.
The eggs hatch after two to five weeks and the larvae then wander across the wood to find
suitable entry points through which to bore into the timber.Then they take between two and ten
years to complete their development.The larvae pupate in late summer to early autumn,each
individual having constructed a pupal cell just below the surface of the wood.After two or three
weeks,the immature beetle emerges from the pupal skin,but then remains torpid inside the
chamber until the following spring or early summer.The mature beetle then cuts a perfectly round
hole,three to five millimeters in diameter,and emerges covered in a fine layer of wood powder.
问题；Summary
The deathwatch beetle is found most often in...13...and ...14...They infest damp-prone timber which
has been affected...15...Adults do not feed,so they survive on...16...and live for only two or three
months.The larvae,on the other hand,live for up to...17...feeding on the timbers during that time.
They pupate in...18...but the adult does not emerge until the following spring.
13.____________ 14.________________ 15.________________
16.___________ 17._________________ 18._________________
半小时时间,
100分,

雅思 经典 summary 、Hidden history:the beetle's secret cycle of lifeThe deathwatch beetle is thought of as the devil's pest in churches and old houses,but in natural habitats it infests a wide range of decaying hardwoods.It has been found in hor
我匆忙帮你做了下.
13. oak
14. willow
15. by fungi
16. stored reserves
17. eggs hatch （花了一部分时间,但是答案还是不确定）
18. late summer
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