【题目】You should try to be patient, Tracy. Learning a language is a slow __________. It takes time, you know.
A. system B. project
C. technology D. process
在线课程【答案】D
【解析】句意：Tracy，你应该有耐心。学习一门语言是一个很慢的过程。你知道它需要时间。system体系；project 项目；technology 技术；process 进程。