【单选题】A recent study shows that more and more Americans are choosing to work at home. There are several reasons for the change. One reason is many parents want more time to be with their children at home. A...
【简答题】More and more Americans are going to work by bike. Do you know why more people are 1 bikes to work? We can answer the question in 2 ways. First, bikes don’t need gasoline (汽油), so it takes 3 money to ...