硬件因素和软件因素的综合是 ______。
A.数据库环境
B.接口环境
C.网络环境
D.社会物理环境
参考答案:C
中国与第三次科技革命的关系正确表述是 [ ]
A、全程参与
B、后期积极参与
C、首先发起
D、始终未参与
This is one of the most interesting questions that ____ asked. [ ]
A. have
B. has
C. have been
D. has been