The idea is controversial（争议）, but about 20 percent of health conscious Australians are believed to eat the national symbol already.

　　"It's low in fat, it's got high protein levels and it's very clean in the sense that basically it's the ultimate free range animal（散养动物）," said Peter Ampt of the University of New South Wales's institute of environmental studies.

　　53. According to the passage, global warming is now mainly caused by _____ .

　　A. methane

　　B. carbon dioxide

　　C. livestock passing wind

　　D. not mention in this passage

　　54. What does the underlined phrase “the idea”（paragraph 9）refer to?

　　A. Australians should give kangaroo-style stomachs to cattle and sheep.

　　B. The bacteria could make the digestive process much more efficient.

　　C. Australians should farm fewer cattle and sheep and just eat more kangaroos.

　　D. The bacteria could potentially save millions of dollars in feed costs for farmers.

　　55. Some Australians begin to eat kangaroos because _____.

　　A. The kangaroos’ farts（放屁）contain no methane

　　B. The kangaroos have a special bacteria

　　C. The kangaroos are the national symbol in Australia

　　D. The kangaroos are low in fat and high in protein

【2017届高考英语二轮专题复习 阅读理解部分之限时训练（十九）】相关文章：

★ 四川省广安市2014高考英语一轮基础训练题（7）及答案

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (53)

★ 湖南省岳阳市2014高考英语一轮单项选择训练题（6）及答案

★ 四川省2016届高考英语一轮复习课时作业（26） Module 2 A Job Worth Doing 外研版必修5

★ 浙江省湖州市2014高考英语阅读理解一轮（暑假）精炼（15）含答案

★ 2017年高考英语二轮复习精品资料：专题16 书面表达（押题专练）（原卷版）

★ 【人教版】2014届高考英语一轮复习指导考点针对练：必修2 unit3《Computers》

★ 2017高考四川省广安市英语阅读理解一轮系列训练：5（含解析）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ规范练：2（含解析）

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (58)