You are managing tooling for an aircraft part．Your team members tell you that they found a few defective parts．When you asked them the reasons for the defect，they mentioned that it could because of several reasons including the material used，the measurement system，inaccurate tolerances in the machine or other factors．To help them to illustrate better how various factors might have contributed to the defect，you will （）．

A．use a control chart

B．create a flowchart

C．draw a fishbone diagram

D．draw a Pareto chart

国人在境外旅游大声喧哗、随地吐痰、乱扔杂物、乱刻乱画等不文明言行严重损害了中国的形象，引起广泛的舆论关注。请以文明旅游为主题拟写一条宣传语。要求使用对偶的修辞方法，主题鲜明，语言得体。（5分）