练习材料：
Lesson 15-1 Secrecy in industry 工业中的秘密
Two factors weigh heavily against the effectiveness of scientific research inindustry. One is the general atmosphere of secrecy in which it is carried out, the other the lack of freedom of the individual research worker. In so far as any inquiry is a secret one, it naturally limits all those engaged in carrying it out from effective contact with their fellow scientists either in other countries or in universities, or even, often enough, in other departments of the same firm. The degree of secrecy naturally varies considerably. Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.
应用配置：L0+L4
知识笔记： factors/fæktərz effectiveness/ɪˈfɛktɪvnəs industry/ɪndəstri individual/ɪndəˈvɪʤəwəl contact/kɑnˌtækt
练习感悟：用时约41分。最后一版还是有些小瑕疵，没再调整。
