Nopain, no gain.我们的安排是这样的，第一遍用听力软件精听材料（建议做单句听写，听写的时候不要偷看我给的挖空题），然后按照我给的挖空题填关键词，回复后即可看到听力原文和文章精解，我将把难点和易错点oneby one 分析给大家。
We've just seen two ______ large birds that cannot fly: the ______ and the ______. Over here is an interesting ______ from the past. This ______animal is not the giant ______ it appears to be, but an ______. This particular kind of auk is very rare, only 78 skins are known to exist and most are not preserved as well as this one. The great auk, as you can see, was a rather large bird, and it couldn't fly either. However, evidence suggests that the auk was an excellent swimmer and diver. Unfortunately, those abilities did not protect it from being easy prey for hungry sailors who years ago sailed the very cold and often icy waters of Greenland, Iceland, and Scotland. In fact, records indicate that the auk was rather tasty and that its eggs. Excuse me . . . that its eggs and feathers were useful as well. Still, it isn't clear what other factors led to the big bird's ______ around 1844, the last time anyone reported seeing one. Of course, we believe it's important to take extra ______ to preserve the remaining great auk skins. After all, these specimens should prove ______ for future scientific research. Does anyone have any questions before we move on to our next bird exhibit?