填空题

This passage aims to make the public aware of ______.

【参考答案】

the importance to preserve the rare species
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填空题
The raw material of the biological sciences has been subjected to ______.
单项选择题
A．How many weeks there are in a month.B．Which days people should work.C．How the week is divided into days.D．Which day begins the week.
A．How many weeks there are in a month.
B．Which days people should work.
C．How the week is divided into days.
D．Which day begins the week.
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