高考英语阅读理解限时训练精品题（18）及答案阅读理解---------[2013•
北京卷] tail spin two dolphins race around in a big pool in the ocean park. the smaller dolphin, grace, shows off a few of her tricks, turning around and waving hello to the crowd. the most amazing thing about her, however, is that she's even swimming at all. she doesn't have a tail. grace lost her tail as a baby when she got caught
