黃金閱讀The Geologic History of the Mediterranean - 英檢
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By Delia
at 2010-02-25T10:51
at 2010-02-25T10:51
Table of Contents
Paragraph 3 With question such as these clearly before them, the scientists
aboard the Glomar Challenger processed to the Mediterranean to search for the
answers. On August 23, 1970, they recovered a sample. The sample consisted of
pebbles of gypsum and fragments of volcanic rock. Not a single pebble was
found that might have indicated that the pebbles came from the nearby
continent. In the days following, samples of solid gypsum were repeatedly
brought on deck as drilling operations penetrated the seafloor. Furthermore,
the gypsum was found to possess peculiarities of composition and structure
that suggested it had formed on desert flats. Sediment above and below the
gypsum layer contained tiny marine fossils, indicating open-ocean conditions.
As they drilled into the central and deepest part of the Mediterranean basin,
the scientists took solid, shiny, crystalline salt from the core barrel.
Interbedded with the salt were thin layers of what appeared to be windblown
silt.
4.Which of the following can be inferred from paragraph 3 about the solid
gypsum layer?
○It did not contain any marine fossil.
○It had formed in open-ocean conditions.
○It had once been soft, deep-sea mud.
○It contained sediment from nearby deserts.
答案是A,但第三段為什麼可以推論出,solid gypsum layer不包括化石呢??
沒有看到什麼關鍵字><
--
aboard the Glomar Challenger processed to the Mediterranean to search for the
answers. On August 23, 1970, they recovered a sample. The sample consisted of
pebbles of gypsum and fragments of volcanic rock. Not a single pebble was
found that might have indicated that the pebbles came from the nearby
continent. In the days following, samples of solid gypsum were repeatedly
brought on deck as drilling operations penetrated the seafloor. Furthermore,
the gypsum was found to possess peculiarities of composition and structure
that suggested it had formed on desert flats. Sediment above and below the
gypsum layer contained tiny marine fossils, indicating open-ocean conditions.
As they drilled into the central and deepest part of the Mediterranean basin,
the scientists took solid, shiny, crystalline salt from the core barrel.
Interbedded with the salt were thin layers of what appeared to be windblown
silt.
4.Which of the following can be inferred from paragraph 3 about the solid
gypsum layer?
○It did not contain any marine fossil.
○It had formed in open-ocean conditions.
○It had once been soft, deep-sea mud.
○It contained sediment from nearby deserts.
答案是A,但第三段為什麼可以推論出,solid gypsum layer不包括化石呢??
沒有看到什麼關鍵字><
--
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英檢
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By Blanche
at 2010-02-26T21:46
at 2010-02-26T21:46
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