单项选择题
Read the sentences from literature reviews and identify the role they play. 指出文献写作例句的功能。
Barret et al. (2001) reported that their study of evacuation management was based on real-time dynamic features, but the solutions and model they proposed are actually based on strategies and technologies which cannot sufficiently satisfy the demand of real dynamic system.
A.To state the topic or field being examined
B.To search materials relevant to the subject being explored
C.To evaluate information and determine the contribution