[求助]大全 test3－2

2.     Continuous
indoor fluorescent light benefits the health of hamsters with inherited heart
disease. A group of them exposed to continuous fluorescent light survived
twenty-five percent longer than a similar group exposed instead to equal
periods of indoor fluorescent light and of darkness.

The method of the research described above
is most likely to be applicable in addressing which of the following questions?

(A) Can
industrial workers who need to see their work do so better by sunlight or by
fluorescent light?

(B) Can
hospital lighting be improved to promote the recovery of patients?

(C) How do
deep-sea fish survive in total darkness?

(D) What are
the inherited illnesses to which hamsters are subject?（B）

(E) Are there
plants that require specific periods of darkness in order to bloom?

答案是B，不懂怎么来的！请帮忙解释解释！！！Thanks！

我是这么理解的：

提干中先提到这种荧光对某种心脏病人的．．．有好处，紧接着用研究证实＂持续照这种荧光的病人＂比＂一半照荧光一半黑暗的病人＂活得长２５％．

题目问得是研究的实用价值，显然，Ｂ是正确答案．