单项选择题

A．To learn how to prevent a bone disease.
B．To understand differences between bone tissue and other tissue.
C．To find out how specialized bone cells have evolved.
D．To create artificial bone tissue.
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单项选择题
A．She prefers the job where he could travel a lot.B．She prefers the job where she could make good money.C．She prefers the job where she could meet international business people.D．She prefers the job that would give her lots of chances of promotion.
A．She prefers the job where he could travel a lot.
B．She prefers the job where she could make good money.
C．She prefers the job where she could meet international business people.
D．She prefers the job that would give her lots of chances of promotion.
填空题
The patient,____________(急于知道化验的结果), went to the lab again and again.
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