The group has made stoves using mud, bricks, sheet metal, clay, ceramics and old oil drums. Most of the stoves look like large, deep cooking pots. They have an opening at the bottom for the fire and a place on the top to put a pot.
In the late 1970s, Aprovecho produced a popular stove called the Lorena. The Lorena was good at reducing smoke and warming homes. But new tests years later found that it was not efficient. The Lorena used twice as much wood as an open fire, and it took much longer to heat food. Since then, they have experimented with countless other designs.
Their goal is to make an inexpensive stove—let's say five dollars—that makes little smoke, and it's safe for health and reduces global warming and deforestation(采伐森林).
Aprovecho has now partnered with a stove manufacturer in China. The company is making Aprovecho's first mass produced stoves. They are said to use 40%—50% less wood than an open fire, and produce 50%—70% less smoke. A company called StoveTec is selling them through its website for less than ten dollars. Dean Still says that more than one hundred thousand have been sold so far.
56.The underlined word “biomass” in Paragraph 2 refers to________.
A. oil and gas
B. wood
C. coal
D. crop waste or animal waste
答案:D 猜测词义题。根据“the richer people use oil and gas”可以排除A选项。第一段中介绍发展中国家的人们使用wood, crop waste, animal waste or coal, 而biomass所在的句子为People having less money use wood or biomass for cooking, 故可排除B选项,煤炭也是需要花钱的,因此最便宜的燃料除了木头就是crop waste, animal waste。
【高三英语备考总复习人教版选修六:Units 3~5质量过关检测】相关文章:
★ 【浙江专用】2014届高考英语一轮复习课时作业(十二)必修3Unit 2《Healthy eating》
★ 山西省永济市涑北中学高三英语总复习:美文欣赏(2)(Unconditional Love)
★ 2014年牛津译林版高中英语总复习(第1轮)同步练习 M10《Unit 1 Building the future》
★ 【北师大版】2014届高考英语一轮复习指导课时作业:Unit 11 B卷 Word版含解析
★ 【浙江专用】2014届高考英语一轮复习课时作业(七)必修2Unit 2《The Olympic Games》
★ 【北师大版】2014届高考英语一轮复习指导课时作业:Unit 9 A卷 Word版含解析
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21