问答题Read the following text carefully and then translate the underlined segments
into Chinese.
Frog Extinction: Another "Global Warming"
Myth
For years, global warming advocates have
pointed to the sudden decline in frog species in various parts of the world in
the 1990s as evidence of global warming. In January 2006, for example, National
Geographic News carried a report headed "Frog extinctions linked to global
warming". {{U}} {{U}} 1 {{/U}} {{/U}}{{U}}Its report, based on an
article in the prestigious Nature magazine, said: "Global warming may cause
widespread amphibian extinctions by triggering lethal epidemics."{{/U}}
{{U}} {{U}} 2 {{/U}} {{/U}}{{U}}"Alan Pounds and colleagues
suggest that many harlequin frog (小丑蛙) species across Central and South America
have disappeared due to deadly infectious diseases spurred by changing water and
air temperatures."{{/U}} National Geographic News added: "Climate scientists have
long warned that global warming could spur deadly disease epidemics. The study
suggests that such a scenario may already be unfolding in the amphibian world."
If so, humans and other species should consider themselves duly warned.
{{U}} {{U}} 3 {{/U}} {{/U}}{{U}}Because amphibians are
particularly sensitive to environmental change, they may serve as proverbial
"canaries(金丝雀) in a coalmine" that warn of such climate change
dangers.{{/U}} {{U}} {{U}} 4 {{/U}} {{/U}}{{U}}A
two-year-old Study by Britain scientists suggests that some 15 to 35 percent of
land-dwelling plants and animals, or about a million species, would be extinct
or committed to extinction by 2050.{{/U}} Other climate scientists have calculated
that half of the planet's species are already affected by global climate change.
The news for amphibians is particularly bad. In 2004 a global amphibian
assessment by the World Conservation Union, Conservation International, and
NatureServe reported that about one-third of all amphibian species were in
decline. Other media were equally alarmed. In October 2008, the
American online website, Science Daily, said, "Frogs are being killed in
Yellowstone National Park. The predator, Stanford researchers say, is global
warming." It quoted the researchers as saying, {{U}} {{U}} 5
{{/U}} {{/U}}{{U}}"Drastic declines of the amphibians in the world's oldest
nature reserve indicate that the ecological effects of global warming are very
profound and are happening more rapidly than previously
anticipated."{{/U}} All of this has been acknowledged by the IPCC
meeting at Cancun, Mexico, which claims that global warming is threatening the
future of natural habitats and animal species around the world.