1,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 Parilanders， 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 has also declined， even though the annual number caught for human consumption has not increased.
P地域的短吻鱷數目近年降低，重要緣故原由是捕獵。短吻鱷捕食的淡水魚是P住民的食品，P住民願望短吻鱷數目的降低可以致使這類可供人們花費的魚的數目上升。然則這類魚的數目也降低了，只管它每一年被人類捉住花費的的量沒有增長。
Which of following， if true， most help to explain the decline in the population of the fish species?
以下哪一個選項假如是對的，最有用地說明了魚的數目降低?
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.
短吻鱷數目的降低象征著漁民可以到曩昔湖裏和江河裏那些曩昔很傷害之處事情。
B.Over the last few years， Parland’s commercial fishing enterprises have increased the number of fishing
boats they use.
曩昔幾年，P的漁業公司增長了它們應用的打魚船數目。
C.The main predator of these fish is another species of fish on which alligator also prey.
這類魚的重要捕食者是另外一種也被短吻鱷捕食的魚
D.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.
很多住民捕獵短吻鱷是由於鱷魚皮市場價錢高，而不是由於它威逼到魚的數目。
E.In several neighboring countries through which Parland’s rivers also flow， alligators are at risk of
extinction as a result of extensive hunting.
在一些P河道經的臨近國度，短吻鱷有滅盡的傷害由於捕獵。
剖析：
A.漁民在哪事情，不克不及說明為何短吻鱷數目降低，淡水魚的數目也降低。
B.易錯項。文章說得很清晰，人們花費捕食魚的數目沒有上升，以是縱然增長了打魚船的數目，也不克不及解釋魚被捕的多，以是不克不及說明魚的數目降低。
C.準確謎底。因為短吻鱷的數目削減，另外一種該淡水魚的捕食者數目就極可能增長，是它們捕食更多的淡水魚，說明了為何淡水魚的數目削減。
D.捕獵短吻鱷的緣故原由，和文章要說明征象，即為何魚的數目降低無關。
E.短吻鱷有滅盡危害，和文章要說明征象，即為何魚的數目降低無關。
思緒：文章中湧現上升降低，準確謎底每每表現出變更。
變更：短吻鱷變少
響應變更：魚的另外一種捕食者數目變多
2.In virtually any industry，technological improvements increase labor productivity， which is the output of goods and services per person-hour worked. In Parland’s industries， labor productivity is significantly higher than it is in Vergia’s industries. Clearly， therefore， Parland’s industries must， on the whole， be further advanced technologically than Vergia’s are.
對付任何產業來講，技巧的改良進步工人的臨盆率，即每人每小時事情臨盆的產物和辦事的量。P的產業的工人臨盆率比V的產業高。以是很顯著，P的產業團體必定比V技巧先輩。
The argument is most vulnerable to which of the following criticisms?
以下哪一個批駁指出的論證的毛病?
A.It offers a conclusion that is no more than a paraphrase of one of the pieces of information provided in its support.
它給出了一個結論，該結論不過是文中供給支撐結論的一個信息的同義改寫
B.It presents as evidence in support of a claim information that is inconsistent with other evidence presented in support of the same claim.
它作為一個支撐一個主意的證據，和支撐一樣主意的證據不同等。
C.It takes one possible cause of a condition to be
the actual cause of that condition without considering any other possible causes.
它采取了一個大概的緣故原由用來當成誰人狀態的真實緣故原由，而沒斟酌任何其他任何大概的緣故原由。
D.It takes a condition to be the effect of something
that happened only after the condition already existed.
它認定一個情形是某件事的後果，這件工作是在該情形已存在以後產生的。
E.It makes a distinction that presupposes the truth
of the conclusion that is to be established.
它造成為了一個差別，這個差別取決於所樹立結論的真實性。
剖析：
A.不是文章論據的同義改寫，毛病
B.質疑論據。
C.準確謎底。只管技巧提高是一個影響臨盆率的身分，但不料味著是獨一身分。
D.文章中的技巧提高和臨盆率是有前後次序的，並弗成以倒置，毛病
E.文章沒有樹立某個差別。毛病
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