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设计任务：请阅读下面学生信息和语言素材，设计一节英语听说课教学方案。教案没有固定格式，但须包含下列要点：teaching objectivesteaching contentskey and difficult pointsmajor steps and time allocationactivities and justifications教学时间：45分钟学生概况：某城镇普通中学高中一年级学生，班级人数40人。多数学生已经达到《普通高中英语课程标准(实验)》五级水平。学生课堂参与积极性一般。语言素材：Alone in AntarcticaAt 50 I was the first woman to travel alone to the North Pole. But what should I do to celebrate my 60th birthday? What else, but a journey at the opposite end of the world, Antarctica. I began my almost 400-mile journey on November 1st, 1997. I walked and skied alone. My dog team were not with me to pull my sled. Another journey of challenge and danger was about to begin.The first days the weather was very good. The wind was icy but not very strong and there was bright sunshine 24 hours a day. But changes were just around the comer. On the third day I was struggling through stormy weather and during the next week the wind grew stronger and I found myself spending a whole day in my tent.I had travelled only two hours one day when the winds increased so much that I had to put my tent up before the winds became too strong. Within a few minutes the winds increased to a howling storm that threatened to blow me and my tent away, but none of that happened.On November 12th the storm died down. It was my birthday and I wanted to make that day special. I thawed a frozen cake over my fire, placed a candle on the top, lit it and sang "happy birthday" to me, at the top of my voice.A few days later, I was moving forward over a slope that seemed safe when suddenly without warning my worht dropped out from under my skis. I had fallen into a hole and was hanging on the ropes tied to the sled. A piece of ice fell down and I never heard it land. The bottom was a few hundred feet below. I used to practice self rescue many times in the mountains where I live and carefully began climbing out. It took a long time but I finally got out. I was thankful for all the training I had had.I was in good health and all of my equipment was working well. I was so optimistic that I decided that the next day, the 22nd day of. the expedition, I would increase my workday to 12 hours.The next morning I had a bad accident with the sled and hurt my leg. I couldn't stand on my left leg and my head was woozy from hitting the ground. But I knew that I had to get up. Lying on the ice, I would soon die. I struggled to my knees knowing that somehow i had to put my tent up for shelter. On hands and knees I got the tent up and dragged my sleeping bag into the tent and lay down out of the cold wind.I had to make a decision. Wait to get better or give up? I had to think of my family, which is very important to me, and do the right thing. I did so without regret. I had met the challenges of solo travel in an extreme climate. It is an experience I shall never forget and shall value for the rest of my life.
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Passage 1It's one of our common beliefs that mice are afraid of cats. Scientists have long known that even if a mouse has never seen a cat before, it is still able to detect chemical signals released from it and run away in fear. This has always been thought to be something that is hard-wired into a mouse s brain.But now Wendy Ingram, a graduate student at the University of California, Berkeley, has challenged this common sense. She has found a way to"cure" mice of their inborn fear of cats by infecting them with a parasite, reported the science journal Nature.The parasite, called Toxoplasma gondii, might sound unfamiliar to you, but the shocking fact is that up to one-third of people around the world are infected by it. This parasite can cause different diseases among humans, especially pregnant women--it is linked to blindness and the death of unborn babies.However, the parasite's effects on mice are unique. Ingram and her team measured how mice reacted to a cat's urine(尿) before and after it was infected by the parasite. They noted that normal mice stayed far away from the urine while mice that were infected with the parasite walked freely around the test area.But that's not all. The parasite was found to be more powerful than originally thought—even after researchers cured the mice of the infection. They no longer reacted with fear to a cat's smell,which could indicate that the infection has caused a permanent change in mice's brains.Why does a parasite change a mouse's brain instead of making it sick like it does to humans?The answer lies in evolution."It's exciting scary to know how a parasite can manipulate a mouse's brain this way," Ingram said. But she also finds it inspiring."Typically if you have a bacterial infection, you go to a doctor and take antibiotics and the infection is cleared and you expect all the symptoms to also go away."She said, but this study has proven that wrong."This may have huge implications for infectious disease medicine."The author's attitude towards the experiment is__________.
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