问答题

________ (由于激烈竞争) among the airlines, travel expenses have reduced dramatically.

【参考答案】

Owning to fierce competition
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According to the passage, which of the following statements is wrong
A．Modern African politicians approve of tribal divisions.
B．A person is usually taken care of by his own tribe.
C．Africans consider it an obligation to give a job to a fellow tribesman.
D．Tribalism is still a powerful force in day - to - day African life.
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