I. Vocabulary and Structure<br/> Directions: There are 10 incomplete sentences in this part. For each sentence there are four choices marked A), B), C) and D). You should choose the best one based on the Chapter you have finished watching and studying.<br/> 1. Some facilities, such as conference centers, offer the luxury of built-in audio visual capabilities that contain highly __________ equipment.<br/> A、experienced<br/> B、complex<br/> C、complicated<br/> D、sophisticated