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单项选择题

What is the main idea of the news item

A. Somalia is re-infected with polio virus.
B. Somalia has successfully eradicated polio.
C. Somalia suffers from indigenous polio.
D. Polio still persists in developing countries.
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单项选择题The territory which Thompson was exploring had been ______ by the Mayas about thirteen hundred years previously.

A. controlled and reformed
B. conquered and abandoned
C. occupied and developed
D. defeated and destroyed

单项选择题Which of the following statements is INCORRECT about Miss Chart

A. She is older than most undergraduate students.
B. She majors in French and minors in Marketing.
C. She has work experience before entering the university.
D. She succeeds in shortening the academic years.