【单选题】The _________ of the internet has made the parents very cautious, for they are afraid that their children will be distracted by some improper pictures and videos while having an online class.
【简答题】Innovation, the elixir ( 灵丹妙药 ) of progress, has always cost people their jobs. In the Industrial Revolution hand weavers were 36 aside by the mechanical loom. Over the past 30 years the digital revol...