题目

—Do you think teenagers _________ to make their own decisions? —No, I don’t agree with you. They’re too young to do that.  A. encourage         B. are encouraging C. are encouraged    D.is encouraged 答案：C19．“日出江花红胜火，春来江水绿如蓝”，春天来临，池塘水变成绿色原因是（　　）A．池塘边的树、草的绿色，映得池水发绿B．水中绿藻大量繁殖，使池水变绿C．环境污染，水质发绿D．水草、金鱼藻的含量丰富，使池水变绿