How many times has the festival been held already？
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The author mentions the two high mountains in order to show that it is ______.
A. reasonable for Biarni to land precisely at iris father's home
B. possible to sail from Norway to Greenland without modern navigational equipment
C. likely that Biarni landed on America at least 100 years before Leif Erikson
D. probable that Leif Erikson followed the same course as Biarni
What kind of candidate does this company look for？
A. People who majored in German history.
B. People who can speak German only.
C. People who can speak two languages.
D. People who can train employees.
Which of the following activities is NOT mentioned as being available at the picnic？
A. Swimming.
B. Playing chess.
C. Playing soccer.
D. Canoeing.
How many diseases is tobacco smoking responsible for？
A. 25.
B. 30.
C. 45.
D. 50.
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