Although she agrees with some international law, campaigners like Rizwana want laws against fossil fuels, cutting down trees and polluting water.

虽然她赞同一些国际法，但像 Rizwana 这样的运动者希望有反对化石燃料、伐树木和污染水的法律。

It could be convenient to employ birdwatchers to do the initial studies.

18、【解析】此题答案为C。考查考生对所听内容进行推理判断的。据说话者所说" Because we cut down too many trees in the nearby areas， many birds now find places within the city to live。" （为我们在附近伐了太多的树木，许多鸟儿如今在城市里找到了居所。）可推断，许多鸟儿生活在城市里是为它们失去了自然的栖息。故选C。19、【解析】此题答案为B。考查考生获取事实性具体信息的。据说话者所说" The surprising thing is that there are likely more than five or six kinds of birds living8 together at each place。" （令人惊讶的是，每个方可有五六种以上的鸟类生活在一起。）可知，令Christina感到惊讶的是不同的鸟儿生活在一起。故选B。20、【解析】此题答案为C。考查考生获取事实性具体信息的。据说话者所说" I'd like to suggest that a program be started to study these birds。" （我建议启动一个研究这些鸟的项目。）可知，就这些鸟儿（的问题），Christina建议对它们进行研究。故选C。

Besides, who else could dispute his ownership of this underwater property? What other, bolder pioneer would come, ax in hand, to clear away its dark underbrush?

其实，又有谁够跟他争这海底财产的所有权呢？哪有比他更大胆的开荒者，手拿着斧子，敢来这里伐荆棘，开垦田呢？