单项选择题

A．It went out of use 300 years ago.
B．It was invented after the short bow.
C．It was discovered before fire and the wheel.
D．It’’s still in use today.
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单项选择题
A．To tell us how to spell a difficult word.B．To tell us how the American government is run.C．To provide as with a famous poem by Shakespeare.D．To find where to look for information by itself.
A．To tell us how to spell a difficult word.
B．To tell us how the American government is run.
C．To provide as with a famous poem by Shakespeare.
D．To find where to look for information by itself.
单项选择题
A．It can be used by farmers to protect large buildings.B．It was brought to the northern USA by Asian farmers.C．It has done more harm than good in the southern USA.D．It was introduced into the USA to kill harmful weeds.
A．It can be used by farmers to protect large buildings.
B．It was brought to the northern USA by Asian farmers.
C．It has done more harm than good in the southern USA.
D．It was introduced into the USA to kill harmful weeds.
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