七月六在职一战680，放狗

yunyunnon

楼主~ 来考古了!
拜托帮忙看看CR Fossils题有在下面吗?
最近真的是逻辑狗狗荒…

GWD27-Q22:
Whales originated in the freshwater lakes and rivers of ancient Asia about sixty million years ago.  Not until about ten million years later did species of whales develop specialized kidneys enabling them to drink salt water.  Although fossil evidence shows that some early whale species that lacked such kidneys sometimes swam in the Earth’s saltwater oceans, these species must have had to return frequently to freshwater rivers to drink.
Which of the following is most strongly supported by the information given?
A.    Fossils of whale species dating from between sixty million and fifty million years ago will not be found on continents that were at the time separated from ancient Asia by wide expanses of ocean.
B.    Among whale fossils that date from later than about fifty million years ago, none are fossils of whale species that drank only fresh water.
C.    Fossils of whale species that drank fresh water will not be found in close proximity to fossils of whale species that drank salt water.
D.    The earliest whales that drank salt water differed from fresh-water-drinking whales only in their possession of specialized kidneys.
E.    Between sixty million and fifty million years ago, the freshwater lakes and rivers in which whales originated were gradually invaded by salt water.

GWD-9-Q20:
Which of the following most logically completes the reasoning?
Either food scarcity or excessive hunting can threaten a population of animals. If the group faces food scarcity, individuals in the group will reach reproductive maturity later than otherwise. If the group faces excessive hunting, individuals that reach reproductive maturity earlier will come to predominate. Therefore, it should be possible to determine whether prehistoric mastodons became extinct because of food scarcity or human hunting, since there are fossilized mastodon remains from both before and after mastodon populations declined, and ______.
A.    there are more fossilized mastodon remains from the period before mastodon populations began to decline than from after that period
B.    the average age at which mastodons from a given period reached reproductive maturity can be established from their fossilized remains
C.    it can be accurately estimated from fossilized remains when mastodons became extinct
D.    it is not known when humans first began hunting mastodons
E.    climate changes may have gradually reduced the food available to mastodons

T-4-Q32
Delta products, Inc., has recently switched at least partly from older technologies using fossil fuels to new technologies powered by electricity. The question has been raised whether it can be concluded that for a given level of output, Delta’s operation now causes less fossil fuel to be consumed than it did formerly. The answer, clearly, is yes, since the amount of fossil fuel used to generate the electricity needed to power the new technologies is less than the amount needed to power the older technologies, provided that the level of output is held constant.
In the argument given, the two boldface portions play which of the following roles?
A.    The first identifies the context of the conclusion of the argument; the second provides support for that conclusion.
B.    The first provides support for the conclusion of the argument; the second identifies the content of that conclusion.
C.    The first states the position that the argument opposes; the second states the conclusion of the argument.
D.    Each provides evidence that calls the conclusion of the argument into question.
E.    Each provides support for conclusion of the argument.

GWD3-Q18:
Which of following most logically completes the argument?
The last members of a now-extinct species of a European wild deer called the giant dear lived in Ireland about 16,000 years ago.  rehistoric cave paintings in France depict this animal as having a large hump on its back.  Fossils of this animal, however, do not show any hump.  Nevertheless, there is no reason to conclude that the cave paintings are therefore inaccurate in this regard, since ______.
A.    some prehistoric cave paintings in France also depict other animals as having a hump
B.    fossils of the giant deer are much more common in Ireland than in France
C.    animal humps are composed of fatty tissue, which dose not fossilize
D.    the cave paintings of the giant deer were painted well before 16,000 years ago
E.    only one currently existing species of deer has any anatomical feature that even remotely resembles a hump