问题
单项选择题
个人客户证书的有效期为（）年，企业客户证书的有效期为（）年。
A.二 三
B.三 二
C.一 二
D.三 一
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
个人客户证书的有效期为（）年，企业客户证书的有效期为（）年。
A.二 三
B.三 二
C.一 二
D.三 一
参考答案：D
| 用括号里所给单词的适当形式填空。 |
| 1. There _____ (be) a ruler and two pencils in the pencil-case. 2. I have five _____ (photo) of my friend at home. 3. That is _____ (Daming) mother. Let's go and say"Hello"to her. 4. Mike doesn't like _____ (play) football, but he likes swimming. 5. The women are _____ (secretary) at the factories |
