问题 单项选择题

过去20年中,美国玉米年产量一直在全球产量的40%左右波动,2003~2004年度占到41.8%,玉米出口更曾占到世界粮食市场的75%。美国《新能源法案》对玉米乙醇提炼的大规模补贴,使得20%的玉米从传统的农业部门流人工业部门,粮食市场本来紧绷的神经拉得更紧。由于消费突涨,2006~2007年度全球玉米库存出现历史低位,比2005~2006年度剧减了2800万吨。难怪一年中全球粮油主产区的任何一个地方出现持续干旱或洪涝灾害,全球期货现货市场都会出现强烈反应。
这段文字意在表明( )。

A.全球粮食市场正面临着库存紧张的严重危机
B.美国在世界玉米市场中占有举足轻重的地位
C.对玉米乙醇提炼的补贴是一个不合时宜的举措
D.美国生物能源业的发展影响全球粮食供求关系

答案

参考答案:D

解析: 本题属于推断文意型。题干中的逻辑思路是:由于美国大规模补贴玉米乙醇提炼使得生物能源业迅速发展,大量玉米从传统的农业部门流入工业部门,引起粮食市场紧张从而导致全球玉米库存出现历史低位。通过分析全球粮食市场紧张的原因,本段文字意在说明美国生物能源业的发展影响全球粮食供求关系。故选D。

填空题
填空题

Recycling Paper


The process of recycling paper can help to reduce deforestation and energy consumption on a significant scale. There are many different reasons why we should recycle paper products, and some of these are (26) in the paragraphs below.
Energy consumption will always be on the (27) as population levels grow, and so any manufacturing processes which help to reduce energy consumption are (28)
The Energy Information Administration (EIA) claim that there can be as (29) as a 40% energy saving when recycling paper over producing paper (30) the direct raw material.
Although recycling paper has many (31) , it also has its drawbacks. One of these drawbacks is that we cannot recycle the (32) paper product for eternity, as the fibers contained within the paper degrade over time, (33) their strength and length.
On (34) , an individual paper fiber can only be recycled a (35) of six times. Although this is a significant drawback, the six time recycling process will help to (36) a great deal of energy when you consider (37) much paper there is to be recycled.
If paper fibers can be recycled up to 6 times, and we recycled all paper products, this could help to (38) the intensity of deforestation for paper products up to a factor of 6.
With paper production said to (39) around 40% of harvested wood, and paper said to (40) around 90% wood, you can see how recycling paper is an important process for the (41) of our forests.
Today, the use of recycled paper products is on the increase, as more and more people begin to recycle paper (42) products around the home.
Although there are slight differences in the recycling processes of different (43) of paper products (e.g. corrugated, mixed paper, newspaper products), we are able to recycle just about any type of paper product around today.
The recycling logo helps to (44) a recyclable product and can also sometimes help to identify if the product contains any recycled material, in the form of a percentage. This helps a consumer to identify the (45) of recycling various products.

A. paint B. make C. protect D. identify