Gregg Bleakney’s dream was to travel the Americas from top to bottom. He got the idea after he finished a long bike ride. Gregg’s friend, Brooks Allen, also liked riding a bike. The two friends talked and made a plan: they would travel from Alaska to Argentina – by bike.
To pay for the trip, Gregg and Brooks worked to save money for a long time. Once they were on the road, they often camped outdoors and ate cheaply. In many places, local people opened their doors to the two friends and gave them food.
On their way, they passed deserts, rainforests and mountains. They visited modern cities and ancient ruins (遗迹) such as Machu Picchu in Peru. And they made many friends from all over the world.
In May 2007 – two years, twelve countries, and over 30,500 kilometres later – Gregg finally reached Ushuaia, Argentina. (Near Guatemala, Brooks had to go back and Gregg continued without him.)
The trip taught both men a lot about traveling. What did they learn? Here is some of Gregg’s advice:
Travel light. You should carry many things with you.
Be flexible (灵活). Don’t plan everything. Then you’ll be more relaxed, especially if there are problems.
Be polite. One traveler told Gregg, “Nobody wants to fight or cheat a nice man.” It’s true.
根据文章内容填写5个空处，每空不限一词。每题1分
小题1:Gregg Bleakney’s dream was to _______________________.
小题2:Before traveling, the two friends _____________________ to pay for the trip.
小题3:___________ got to Ushuaia, Argentina in May 2007.
小题4:According to the passage, if you don’t plan everything for a trip, ___________________.
小题5:One traveler told Gregg that nobody wants to __________________________.
残冠，根尖病变。拔除过程中，远中颊根折断，取根时，牙根突然消失，捏鼻鼓气时拔牙窝内有气体逸出。如牙根取出后局部遗留较大的口腔上颌窦瘘，正确的处理方法为（）。