[問題]730一題

[jameslu1208]

Parland’s alligator population has been declining in recent years, primarily because of hunting. Alligators prey heavily on
a species of freshwater fish that is highly valued as food by Parlanders, who had hoped that the decline in the alligator
population would lead to an increase in the numbers of these fish available for human consumption. Yet the population of this fish species has also declined, even though the annual number caught for human consumption has not increased.

Which of the following, if true, most helps to explain the decline in the population of the fish species?

A.The decline in the alligator population has meant that fishers can work in some parts of lakes
and rivers that were formerly too dangerous.

B.Over the last few years, Parland’s commercial fishing enterprises have increased
the number of fishing boats they use.

C.Many Parlanders who hunt alligators do so because of the high market price of alligator
skins, not because of the threat alligators pose to the fish population.

D.During Parland’s dry season, holes dug by alligators remain filled with water long enough
to provide a safe place for the eggs of this fish species to hatch.

E.In several neighboring countries through which Parland’s rivers also flow, alligators are
at risk of extinction as a result of extensive hunting.

答案D
各位請幫幫手！！
怎麼樣都解不出來
謝謝

[vantreal]

(D) 因為魚都躲到洞裡去孵蛋了

所以大家也就看不到魚群了.

[lucyyeh]

這題很新鮮，我也沒想過這種會這樣
但我認為合理的解釋應該是：
以往在乾季時，那種特別的魚的魚卵會在那些鱷魚弄出來的洞裡（安全的地方）孵化，
可是現在很不幸的，鱷魚變少了，這樣就造成那種鱷魚弄出來的洞變少了，
相對那種魚的魚卵少了很多安全的地方可孵化，所以"魚口" 也變少了。


請教一下，730是什麼？ 是大全嗎？

[cktseng]

Parland’s alligator population has been declining in recent years, primarily because of hunting. Alligators prey heavily on
a species of freshwater fish that is highly valued as food by Parlanders, who had hoped that the decline in the alligator
population would lead to an increase in the numbers of these fish available for human consumption. Yet the population of this fish species has also declined, even though the annual number caught for human consumption has not increased.

Which of the following, if true, most helps to explain the decline in the population of the fish species?

A.The decline in the alligator population has meant that fishers can work in some parts of lakes
and rivers that were formerly too dangerous.

B.Over the last few years, Parland’s commercial fishing enterprises have increased
the number of fishing boats they use.

C.Many Parlanders who hunt alligators do so because of the high market price of alligator
skins, not because of the threat alligators pose to the fish population.

D.During Parland’s dry season, holes dug by alligators remain filled with water long enough
to provide a safe place for the eggs of this fish species to hatch.

E.In several neighboring countries through which Parland’s rivers also flow, alligators are
at risk of extinction as a result of extensive hunting.

答案D
各位請幫幫手！！
怎麼樣都解不出來
謝謝

我是用消去法 找出答案D

CD carolhide的解答如下僅供參考

alligator是一种鳄鱼，在干燥的季节可以挖洞，洞里面的水足以供freshwater fish 的蛋进行孵化，alligator的数量下降，他们挖的洞的数量也下降，可供freshwater fish 的蛋孵化的地方也就少了，所以freshwater fish 的数量就下降了。