阅读下列短文，从下面每题的A、B、C、D四个选项中选出最佳答案。Two Canadian teenagers, Faiz and Leo, have been taking on a series of wonderful challenges. Their most recent achievement was following the Lake Ontario coastline for 73 kilometers, walking from Toronto to Hamilton, Canada, in about 18 hours.
"We enjoy trying new things that are good for our bodies and minds. We like to overcome challenges like these. And we feel going on a long walk seems to be the purest form of challenge that you can have," Leo said.
With very little preparation, the two 16-year-olds began their journey at 6 am, starting in darkness and finishing before midnight. They took several breaks, stopping at benches with nice views along the way.
On their walk, one of the interesting things they came across was a cargo ship (货船) which was no longer used. "You' d be surprised by the things that you don't see when you' re driving and that you will see when you' re taking your time walking," said Leo.
However, the journey was not only a trial (考验) for bodies but also an important test of minds. There were moments of loneliness for the pair, requiring them to support each other along the way.
Around 70 km into the walk, they ran into a person on a bridge who appeared to be experiencing something painful.
"I wasn't sure what was going to happen me and Leo, we tried to talk him out of it and ended up calling the police, and the situation was eased and everyone was OK," Faiz said.
The walk is now long over but Faiz and Leo are not done challenging themselves, with plans to start a two-day 100 km walk in the near future.
