【单选题】The fruit _______ for several days. It doesn't look fresh now. We'd better throw it away. [ ]
【简答题】字符串具有 ,每个字符一旦创建,不能通过 对其做任何修改。(不可变性,索引)
【简答题】In England, we look forward to our birthdays for 3 days a year! We invite special people to celebrate it with us. The Presents Presents are opened as soon as the children are awake. They can’t wait ...
【判断题】好的用户体验是经过反复测试、试验而得来的,在设计过程中要站在用户角度去考虑。
【单选题】根据《合同法》规定,违约责任的承担方式有()。