不道德的人体实验是()
A.天然实验
B.自体实验
C.欺骗实验
D.自愿实验
参考答案:C
—Did Alice enjoy the concert held in Grand Theater yesterday?
—Yes, she did. She ______ such an excellent concert for a long time.[ ]
A. didn’t take part in
B. wouldn’t take part in
C. hasn’t been in
D. hadn’t been in
可以生成EDI标准格式文件的EDI通信过程是( )。
A.映射
B.翻译
C.通信
D.文件的接收和处理