Do you know that a living cell can be for a thousand years if the temperature is right?
A. spared
B. protected
C. preserved
D. developed.
网友回答
A. spared
B. protected
(答案→)C. preserved
D. developed.
解析：句意，你知道吗，一个活细胞如果温度合适，它可以被保存一千年。Spared多余的 protected被保护的 preserved保存 developed发展，根据题意，故选C。