The two jobs I have held are related to exhibition. In these two jobs, I took on many roles, including a front desk attendant, an administrative assistant, a guide, and many other roles.
 guide usherguide 可指在展場或其他地方的指引人員，為客人指路。usher = 幫客人帶到他的座位的人，場合包括婚禮，戲院等。
這是一個連環問題: 燃燒石油導致二氧化碳增加，二氧化碳增加導致溫室效應，溫室效應導致冰層融化、海平面上升。 (請填空)
This is a chain of problems. Burning oil leads to increase in carbon dioxide, which leads to the greenhouse effect, which leads to melting of glaciers, which leads to rising sea level.下一題 - 無窮的潛力 f我要發問