The purpose of the author in writing the text is to _______.
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1 .The last word “megafauna” in Paragraph 2 most probably means _____.
A birds B plants C big animals D small animals
2 .Genyornis was vulnerable to human hunting because it was _____.
A a delicacy B very weak C very small in size D clumsy
3 .How many models have been put forward for the extinction of Genyornis?
A One. B Two. C Three. D Four.
4 .That Australia experienced mild cooling and the Americas rapid warming suggests that _____.
A the climatic conditions were unfit for Genyornis to live B Genyornis were highly adaptable to different climatic conditions C The two climatic conditions were both bad for Genyornis D The climatic conditions had nothing to do with the extinction of Genyornis
5 .The selection is mainly about _____.
A the debate over the time of the human presence in Australia. B the relationship between the human presence and magafaunal extinction. C the relationship between human activities and climatic changes. D the debate over factors causing megafaunal extinction.
7 .By referring to the report of the expedition team, the author shows that _______.
A the Black Sea was gradually refilled 10,000 years ago. B a wedge of sediment was found at the bottom of the Black Sea C the hard-rock basement beneath the sediments filling the Bosporus channel lies at a depth of nearly 35 meters D a thin and uniform dusting of sediment with a geologically instant...
8 .“Brackish” water (Line 1, Para.1 ) is not pure because it is _______.
A slightly salty B unclear C polluted D not fresh
9 .The text is most likely a part of a _______.
A journalist interview B book review C scientific report D narrative story
10 .If a rising Mediterranean had gradually refilled the lowered Black Sea, _______.
A the floodwaters would have left a thicker, uniform dusting of sediment B the Black Sea would have become a much smaller freshwater lake C radiocarbon dating of the shells from deeper sediments would have yielded older age than those from shallow shelf D the hard-rock basement beneath the sediments...
