题目内容
（请给出正确答案）
When did people first begin to use stamps？
A．In the early 19th century.
B．On May 6,1840.
C．On May 6,1814.
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更多“When did people first begin to…”相关的问题
When did people describe their computer by the number？
A．Late 1980s
B．Late 1970s
C．Early 1980
When did the Japanese people learn how to make paper？
A．105 A.D.
B．500 A.D.
C．600 A.D.
What kind of weapons did people have when the battles were fought in 1775？
A．Primitive but fatal.
B．Advanced.
C．Ineffective.
D．With short range.
How did people use to respond when their kids got into trouble at school？
A．They'd question the teachers.
B．They'd charge up to the school.
C．They'd tell the kids to calm down.
D．They'd put the blame on their kids.
When did the population of New York grow to 3 million people？
A．in the early nineteenth century
B．in the late nineteenth century
C．in the middle of nineteenth century
D．during the Civil War
When did people begin to realize the value of salt？
A．When they used salt to melt snow.
B．When they started to preserve food with salt.
C．After they found animals licking salt.
D．After they found salt's magical powers.
When did people stop exploring a lot？
A．In the second half of the 19th century.
B．In the 1960's.
C．In the first part of the 20th century.
D．In the early 1800's.
When did people begin making shoes for each foot？
A．In Roman Times.
B．In the Middle Ages.
C．In the eighteenth century.
D．In the nineteenth century.
According to the "Clovis first" theory, when did people travel to North America？
A．30,000years ago.
B．13,000 years ago.
C．14,000 years ago.
D．20,000 years ago.
When did the two people see each other last？
A．More than two years ago.
B．Last Christmas.
C．Last birthday party,
D．A long time ago.
