真题练习

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

答案解析

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。