化石
参考答案：
是经过自然界的作用，保存于地层中的古生物遗体、遗物和遗迹。
A．In Cherry Blossoms Village ninety of the residents are over 85 years old.
B．In the United States, there are twice as many centenarians as there were ten years ago.
C．All the people studied by these scientists from Georgia live in institutions for the elderly.
D．Almost all the residents in Cherry Blossoms Village have unusual hobbies.
做标准机的控制图应该由哪个部门负责完成？（）
A.工程部
B.行政部
C.生产部
