单项选择题

A．Biological companies.
B．Nobody.
C．Scientists.
D．Government.
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单项选择题
A．Amerigo Vespucci was an Italian navigator.B．Amerigo Vespucci was a Spanish navigator.C．Christopher Columbus visited America four times.D．The Spanish began to use the name America in the 19th century.
A．Amerigo Vespucci was an Italian navigator.
B．Amerigo Vespucci was a Spanish navigator.
C．Christopher Columbus visited America four times.
D．The Spanish began to use the name America in the 19th century.
单项选择题
A．He is very polite and considerate.B．He is very rude and inconsiderate.C．He is very cynical and laughable.D．He is careless and inconsiderat
A．He is very polite and considerate.
B．He is very rude and inconsiderate.
C．He is very cynical and laughable.
D．He is careless and inconsiderat
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