jailbreak河北安平中学高二英语（实验部）暑假作业（7月18日，无答案）

2021年1月14日发(作者：寇章)

河北安平中学实验部高二年级英语学科假期作业
1
2019年7月18日 命题人：李雨全 审核人：张红艳

第一部分 阅读理解（每小题2分，满分40分）
A
With weather getting warmer,animals have begun to change in response to the new
some of them have become scientists thought this might be an
adaptation to a warmer world; smaller bodies should be able to lose heat now a new
study has found that for red knot birds,that’s not the case.
Ecologist Jan van Gils and his colleagues have been studying these birds for 33
the course of their research,van Gils and his team have found that in Russia where the red knots
summer,snowmelt and spring have been advancing by half a day per year on more
than thirty years,the researchers caught and measured nearly 2,000 years when the
snowmelt had arrived particularly early,the birds were likely to be smaller and have shorter bills
(鸟嘴).
The birds leave the coast of Western Africa,where they winter,and fly north toward
birds are supposed to arrive in spring,so they can lay their eggs and when their chicks
hatch out,there will be a wealth of arthropod (节肢动物) insects to feed their young.
[来源:Z|xx|]

But even though the red knots are advancing their arrival date by about a quarter of a day per
year,it is not enough to keep up with the in years when the snowmelt arrives
early,the arthropods reach the greatest quantity before the birds need ore,chicks miss
out on eating well and they grow up to be smaller and have shorter bills.
Being smaller and having a shorter bill isn’t a problem in Russia—but it is in
,adult birds feed on thin-shelled bivalves (双壳贝类),Loripes the
bivalves are buried r,other options,Dosinia isocardia bivalves and seagrass rhizomes
(根茎),which only the youngest birds rely on,are not abundant or nutritious.
Van Gils and his colleagues found that,in their first year,shorter- billed red knots don’t survive
as well in majority of birds that survive are the long-billed birds.
did Jan van Gils and his colleagues reach the conclusion?
comparing red knots with other birds.
dividing 2,000 red knots into several groups.
watching and examining red knots for three decades.
analyzing studies that have been published in Science.
influence does early snowmelt have on red knots?
[来源学*科*网Z*X*X*K]