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The passage below is accompanied by four questions. Based on the passage,
choose the best answer for each question.
Landing in Australia, the British
colonists weren't much impressed with the small-bodied, slender-snooted marsupials called
bandicoots. "Their muzzle, which is much too long, gives them an air exceedingly stupid,"
one naturalist noted in 1805. They nicknamed one type the "zebra rat" because of its
black-striped rump.
Silly-looking or not, though, the zebra rat—the smallest
bandicoot, more commonly known today as the western barred bandicoot—exhibited a genius for
survival in the harsh outback, where its ancestors had persisted for some 26 million years.
Its births were triggered by rainfall in the bone-dry desert. It carried its
breath-mint-size babies in a backward-facing pouch so mothers could forage for food and dig
shallow, camouflaged shelters.
Still, these adaptations did not prepare the
western barred bandicoot for the colonial-era transformation of its ecosystem, particularly
the onslaught of imported British animals, from cattle and rabbits that damaged delicate
desert vegetation to ravenous house cats that soon developed a taste for bandicoots. Several
of the dozen-odd bandicoot species went extinct, and by the 1940s the western barred
bandicoot, whose original range stretched across much of the continent, persisted only on
two predator-free islands in Shark Bay, off Australia's western coast.
"Our
isolated fauna had simply not been exposed to these predators," says Reece Pedler, an
ecologist with the Wild Deserts conservation program.
Now Wild Deserts is using
descendants of those few thousand island survivors, called Shark Bay bandicoots, in a new
effort to seed a mainland bandicoot revival. They've imported 20 bandicoots to a preserve on
the edge of the Strzelecki Desert, in the remote interior of New South Wales. This sanctuary
is a challenging place, desolate much of the year, with one of the world's most mercurial
rainfall patterns—relentless droughts followed by sudden drenching floods.
The
imported bandicoots occupy two fenced "exclosures," cleared of invasive rabbits (courtesy of
Pedler's sheepdog) and of feral cats (which slunk off once the rabbits disappeared). A third
fenced area contains the program's Wild Training Zone, where two other rare marsupials
(bilbies, a larger type of bandicoot, and mulgaras, a somewhat fearsome fuzzball known for
sucking the brains out of prey) currently share terrain with controlled numbers of cats,
learning to evade them. It's unclear whether the Shark Bay bandicoots, which are perhaps
even more predator-naive than their now-extinct mainland bandicoot kin, will be able to make
that kind of breakthrough.
For now, though, a recent surge of rainfall has led to
a bandicoot joey boom, raising the Wild Deserts population to about 100, with other
sanctuaries adding to that number. There are also signs of rebirth in the landscape itself.
With their constant digging, the bandicoots trap moisture and allow for seed germination so
the cattle-damaged desert can restore itself.
They have a new nickname—a
flattering one, this time. "We call them ecosystem engineers," Pedler says.
Question 4 : According to the text, the western barred bandicoots now have a flattering name because they have
The western barred bandicoots have earned a new nickname due to their constant digging aiding the desert restore itself: “With their constant digging, the bandicoots trap moisture and allow for seed germination so the cattle-damaged desert can restore itself. They have a new nickname—a flattering one, this time.” So, option 3 is the correct choice.
The question is " According to the text, the western barred bandicoots now have a flattering name because they have"
Choice C is the correct answer.
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