单项选择题

A．Employ them as lab assistants.
B．Teach chemistry classes at their high school.
C．Help them with their studies.
D．Pay them for participating in the study.
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单项选择题
A．At the same time as in Italy.B．In the 15th century.C．About 600 years after forks came to Europe.D．In the 11th century.
A．At the same time as in Italy.
B．In the 15th century.
C．About 600 years after forks came to Europe.
D．In the 11th century.
单项选择题
A．She was a famous author.B．Her family later became famous landowners.C．She exemplifies the immigrant spirit.D．She invented some labor-saving farm equipment.
A．She was a famous author.
B．Her family later became famous landowners.
C．She exemplifies the immigrant spirit.
D．She invented some labor-saving farm equipment.
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