【单选题】()是一个包含证书持有人个人信息、公开密钥、证书序号、有效期、发证单位的电子签名等内容的数字文件。
【单选题】近年来国际形势复杂多变,能源危机、粮食危机、金融危机等交替出现,世界饥饿人口快速增加,全球粮价上涨,全球粮食安全形势恶化,粮食安全问题再次成为全世界关注的焦点。由此可见()。
【单选题】听力原文:W: Did you see Susan in the business office? M: Yes, she was applying for a student loan. Q: What was Susan doing? (14)
A.
Asking for some financial aid.
B.
Lending something to a student.
C.
Reading a student's application.
D.
Borrowing money for a business.
【单选题】近年来国际形势复杂多变,能源危机、粮食危机、金融危机等交替出现,世界饥饿人口快速增长,全球粮价上涨,全球粮食安全形势恶化,粮食安全问题再次成为全世界关注的焦点。由此可见,()。
【简答题】The class teacher thought that hobbies were important for children. So she encouraged all her students to have one, and sometimes she arranged hobby shows for their parents to see as a result. One mor...