What makes monarch butterflies particularly interesting is they migrate, all the way to California or Mexico in back.
出自-2014年6月听力原文
As a young man, he began walking over tens of thousands of miles during his lifetime, through the south to Florida, the west to California and north to Alaska, where readers are taken a long and particularly hair-raising adventure on a large mass of floating ice
出自-2013年6月听力原文
Pierre Salinger was appointed senator from California but subsequently lost his first election
出自-2013年6月听力原文