单项选择题
A. an explanation B. a contradiction C. a reference D. a rejection
A. Spero can hardly maintain her business B. Spero is too much engaged in her work C. Spero has grown out of her bad habit D. Spero is not in a desperate situation
A. the use of machines to produce science fiction B. the wide use of machines in manufacturing industry C. the invention of tools for difficult and dangerous work D. the elite’s cunning tackling of dangerous and boring work