Genyornis was vulnerable to human hunting because it was _____.
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1 .What seems to be the cause of periodical refreshments of protectionism?
A The periodical nature of the economic cycle． B The constant fluctuation of interest rate． C The instability in foreign exchange rate． D The inconsistency of businessmen and politicians．
2 .According to the text，which sector has NOT been threatened by free trade principles?
A The automobile industry． B The low-skill jobs． C The advance-skill service． D The high-tech industry．
3 .“That was disturbing” in Paragraph 4 refers to the fact that______.
A even the president’s economic advisers chairman could not find out the true value of free trade B Gregory Mankiw knows too little about the present economic situation in America to offer wise advice C simple and logical truth is defeated by the ignorant business and political circle D the admini...
4 .The author’s attitude towards trade protectionism is obviously______.
A supportive B cynical C critical D enthusiastic
5 .The last word “megafauna” in Paragraph 2 most probably means _____.
A birds B plants C big animals D small animals
7 .How many models have been put forward for the extinction of Genyornis?
A One. B Two. C Three. D Four.
8 .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
9 .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.
10 .The purpose of the author in writing the text is to _______.
A outline the geographical features of the Bosporus B explain why the Black Sea was a freshwater lake C describe a joint Russian-US expedition to the Black Sea D provide new evidence that a rising Mediterranean suddenly refilled the lowered Black Sea
