五、以今日的科技，航行儀器系統（navigation instrument system，亦稱導航儀器系統）已經發展到非常先進。請問你覺得還有哪些缺點？你有哪些改進構想？（15 分）

I. (1) Dr. Chiyoko Smith will give a talk here soon. (2) The talk will take place at the University Auditorium, National Cheng Kung University. (3) Dr. Smith's upcoming talk is about the promises of stem cell. (4) Dr. Smith is Professor ofBiology at Socrates University. (5) The talk will be held from 2pm to 4pm, April 1, 2015.