74. Many customs and traditions are connected to yearly celebrations.

从文章第一句话可知答案。

73. To prove that Morris dancing isn’t a dying tradition.

从语篇上讲，这句话是对上句话“…to see that Morris dancing is not a dying tradition”的补充说明。

72. By lighting a fire and decorating the home with an evergreen.

从文章第一段倒数第四行“The traditions of lighting a fire and decorating the home with an evergreen have their roots in times long before Christianity.”可知庆祝方式。

71. Because they contain the spirit of the corn and will bring a good harvest.

从文章第一段第四行“People believe that the doll contains the spirit of the corn and will bring a good harvest.”可知原因。

70.　 D。从文章的最后一句可以得出答案。

69.　 A。从倒数第二段的第一句可以得出答案。

68.　 C。 从第三段 “Huge fields of gas shale are believed to lie under the Appalachian Mountains, Michigan and the south-central states”可以知道C答案正确。

67.　 B。 根据文章第四段内容在进行页岩气开采时，先用钻子钻入岩层再注入高压水、沙子或者其他材料到岩层当中，促使岩层开裂释放气体，所以答案是 “break” 有裂开、破碎的意思。

66. C。从“It produces half the carbon dioxide of other fossil fuels. So it may help cut the production of carbon gases linked to climate change.” 天然气燃烧产生的二氧化碳气体只是燃烧其他矿物燃料的一半，所以是环保的。

65. C。根据第一段最后两句中的“Luckily……amazing”等词可以看出作者的态度是很赞同和支持这项服务的。