It can be inferred that which of the following pairs are the two elements of the "dual influence" mentioned at the beginning of the last paragraph？
A. Slavery and West African culture.
B. Tribal affiliations in West Africa and family affiliations in West Africa.
C. A sense of individuality and a sense of tribal identification.
D. The history of West Africa and modern black political movements.
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It can be inferred that the author regards the historicity of the Biarni narrative as ______.
A. conclusively proved
B. almost conclusively proved
C. possibly true
D. highly unlikely
Which of the following can be inferred about the viewpoint expressed in the second paragraph of the passage？
A. It is a reinterpretation of slave life based on new research done by African-American scholars.
B. It is based entirely on recently published descriptions of slave life written by slaves themselves.
C. It is biased and overly sympathetic to the views of white, colonial slaveholders.
D. It is highly speculative and supported by little actual historical evidence.
What is the best title for this passage？
A. Globalization of the World
B. Rapid Development of High-tech Communication Equipment and Overseas Market
C. Secret of Success for Modem Business
D. Key Factors for Business and Business People in Modem World
The title below that best expresses the main idea of this passage is ______.
A. The Business Cycle
B. The Recovery Stage
C. An Expanding Society
D. The Period of Good Times
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