17.第17篇(提纲式议论文)Directions:A. Title: Air Travel
B. Time limit: 40 minutes
C. Word limit: about 200 words
D. Your essay should be written clearly on ANSWER SHEET 2.
E. Your essay should be based on the information given below.现在许多人愿意乘飞机旅行。随着我国民航事业的迅速发展，全国各大城市兴建了许多现代化的机场。乘飞机旅行有许多长处（方便、快捷、省时、舒适等）；但是，空中旅..