2024年5月19日发(作者：u盘显示加密让格式化)

conspicuous eggs 托福阅读

Among the species of seabirds that use the windswept cliffs

of the Atlantic coast of Canada in the summer to mate,lay

eggs,and rear their young are common murres,Atlantic

puffins,black-legged kittiwakes,and northern all

the birds on these cliffs,the black-legged kittiwake gull is

the best suited for nesting on narrow gh its

nesting habits are similar to those of gulls that nest on flat

ground,there are a number of important differences related to

the cliff-nesting habit.

The advantage of nesting on cliffs is the immunity it gives

from foxes,which cannot scale the sheer rocks,and from ravens

and other species of gulls,which have difficulty in landing on

narrow ledges to steal immunity has been followed by

a relaxation of the defenses,and kittiwakes do not react to

predators nearly as fiercely as do ground-nesting gulls.A

colony of Bonaparte's gulls responds to the appearance of a

predatory herring gull by flying up as a group with a clamor

of alarm calls,followed by concerted mobbing,but kittiwakes

simply ignore herring gulls,since they pose little threat to

nests on r do kittiwakes attempt to conceal their

gulls keep the nest area clear of droppings,and

remove empty eggshells after the chicks have hatched,so that

the location of the nest is not given akes defecate

over the edge of the nest,which keeps it clean,but this

practice,as well as their tendency to leave the nest littered

with eggshells,makes its location very conspicuous.

On the other hand,nesting on a narrow ledge has its own

peculiar problems,and kittiwake behavior has become adapted to

overcome female kittiwake sits when mating,whereas

other gulls stand,so the pair will not overbalance and fall off

the nest is a deep cup,made of mud or seaweed,to hold

the eggs safely,compared with the shallow scrape of other

gulls,and the chicks are remarkably immobile until fully

do not run from their nests when approached,and if

they should come near to the cliff edge,they instinctively turn

back.

aspect of the kittiwake gull does the passage mainly

discuss?

(A)Its defensive behavior(B)It interactions with other

gull species(C)Its nesting habits(D)Its physical difference

from other gull species

word"rear"in line 2 is closest in meaning to

(A)visit(B)watch(C)reverse(D)raise