【单选题】At least since the Industrial Revolution, gender roles have been in a state of transition. As a result, cultural scripts about marriage have undergone change. One of the more obvious【21】has occurred i...
【简答题】For four hundred years or more, one thing has been a characteristic of Americans. It is called their “ work ethic ” . Its (21) were in the teaching of the Christian Puritans who first settled in(22) ...