445.At minus 130°C,a living cell can _____ for a thousand years.
A.preserve
B.be preserved
C.be preserving
D.have been preserved
446.To her disappointment, what she had devoted herself to ____ in nothing but failure.
A.resulting
B.results
C.has resulted
D.resulted
445.答案是B;living cell能够被保存上千年。
446.答案是D;由had devoted暗示,应用过去时。
