题目

(2019·全国卷Ⅰ)The polar bear is found in the Arctic Circle and some big land masses as far south as Newfoundland. While they are rare north of 88°， there is evidence __1__  they range all the way across the Arctic, and as far south as James Bay in Canada.  It is difficult to figure out a global population of polar bears as much of the range has been __2__ (poor) studied; however, biologists calculate that there are about 20,000­25,000 polar bears worldwide. Modern methods __3__ tracking polar bear populations have been employed only since the mid­1980s, and are expensive _思归|||| 阅读下面一首元诗，按要求回答后面的问题。 思归 完颜璹［注］ 四时唯觉漏声长，几度吟残蜡烬釭。 惊梦故人风动竹，催春羯鼓雨敲窗。 新诗淡似鹅黄酒，归思浓如鸭绿江。 遥想翠云亭下水，满陂青草鹭鸶双。 　　注：完颜璹曾去过金的故地上京，上京是女真祖辈肇兴之地。故园春色给诗人留下极美好的印象。此诗是他从上京回到中原后所写。 （1）诗的前两句写“漏声长”、“蜡烬釭”，言外之意是什么？请联系全诗内容分析。 ________________ （2）第三联突出运用了怎样的表达技巧？请分析其表达效果。 ________________