【托福阅读】精选阅读真题长难句50句

【托福阅读】精选阅读真题长难句50句

1、 Later experiments in which researchers played recordings of songs to young

birds showed just how precise this influence was, many of them would learn

the exact pattern of the recording they had heard.

2、 The crude song of a bird reared in isolation gives some clues as to what this

rough idea may be the length, the frequency range and the breaking up into

notes are all aspects of chaffinch song shared between normal birds and

those reared in isolation.

3、 Whatever the nature of the learning rules in a particular species, there is no

doubt that they are effective, it is very unusual to hear a wild bird singing a

song which is not typical of its own species despite the many different songs

which often occur in a small patch of woodland.

4、 Chemical analysis of bones enables archaeologists to determine the

proportion of meat to vegetable foods in the diet by measuring the proportion

of calcium to strontium in ancient bone because strontium in place of calcium

in bones comes primarily from ingested plants.

5、 Each dwelling had a different arrangement of the giant bones, which came

from the skeletons of long-dead animals retrieved from the surrounding area

by occupants of the site, not from animals they had recently hunted.

6、 In a precedent-setting decision, the Federal Energy Regulatory Commission

ordered the dam removed after concluding that the environmental and

economic benefits of a free-flowing river outweighed the electricity generated

by the dam.

7、 Built nearly a century ago to provide power to lumber and paper mills in the

town of Port Angeles, these dams blocked access to upstream spawning beds

for six species of salmon on what once was one of the most productive

salmon rivers in the world.

8、 The Hetch Hetchy Dam in Yosemite National Park might be taken down to

reveal what John Muir, the founder of the prestigious environmental

organization Sierra Club, called a valley “just as beautiful and worthy of

preservation as the maj estic Yosemite.”

9、 A chance collision between two comets, or the gravitational influence of one

of the Jovian planets—Jupiter, Saturn, Uranus, and Neptune—may

occasionally alter the orbit of a comet in these regions enough to send it to

the inner solar system and into our view.

10、 These comets appear to be distributed in all directions from the Sun, forming

a spherical shell around the solar system, called the Oort cloud, after the

Dutch astronomer Jan Oort.

11、 After the arrival of hunter-gatherers in the southwestern region of North

America, several alternative types of agriculture emerged, all involving

different solutions to the Southwest’s fundamental problem: how to obtain

enough water to grow crops in an environment in which rainfall is so low and

unpredictable that little or no farming is practiced there today.

12、 That fate actually befell the Mimbres, who started by farming the floodplain

and then began to farm adjacent land above the floodplain as their population ca me to exceed the floodplain’s capacity to support it.

13、 However, when drought conditions returned, that gamble left them with a

population double what the floodplain could support, and Mimbres society

collapsed suddenly under the stress.