附教学内容：
北师大版《英语》九年级Unit 7 Lesson 21 To the South Pole
“It's Day 45 of our expedition to the South Pole. This must be one of the most difficult days I've ever had,” I thought with a heavy breath as I walked against the wind and snow in sub-zero temperatures. We're finally just a few miles away from our destination.
This whole trip has been very difficult. We've been walking around 12 hours a day and I'm very tired. However, I can't complain because it's nothing compared to the journey of Roald Amundsen. Whenever I almost gave up, I tried to think of how he overcame his difficulties more than 100 years ago.
This journey has been special even though at times it felt like it was never going to end. First, it's not easy to move over the white snow and ice that feels like an ocean. Sometimes it's white everywhere and it's hard to see more than a few metres ahead because of storms. Luckily, we have planned the route well.
Another challenge of the journey is preparing food. For example, we have to eat any hot food fast as it gets cold quickly. Sometimes, we just have some nuts and sweets since there's no time to stop for a proper meal. Even so, we've always made sure that we eat the right food so that we can continue our journey with enough energy.
I think the hardest part is to protect our feet. It would be awful if we couldn't get to the pole because of injuries. Our team doctor has always treated our injuries well and has kept us in good shape.
It will feel wonderful to be finally standing at the South Pole. This expedition has taught me that we need to overcome all kinds of difficulties before we can succeed and that we should never give up.
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