Question

Some of the world’s most significant problems never hit headlines. One example comes from agriculture. Food riots （暴动）and hunger make news. But the trend lying behind these matters is rarely talked about. This is the decrease in the growth in production of some of the world’s major crops. A new study by the University of Minnesota and McGill University in Montreal looks at where, and how far, this decline is occurring.

The authors take a vast number of data points for the four most important crops: rice, wheat, corn and soyabeans. They find that on between 24% and 39% of all harvested areas, the improvement in production that took place before the 1980s slowed down in the 1990s and 2000s.

There are two worrying features of the slowdown. One is that it has been particularly sharp in the world’s most populous countries, India and China. Their ability to feed themselves has been an important source of relative stability both within the countries and on world food markets. That self-sufficiency (自给自足) cannot be taken for granted if productions continue to slow down.

Second, production growth has been lower in wheat and rice than in corn and soyabeans. This is problematic because wheat and rice are more important as foods, accounting for around half of all calories consumed. Corn and soyabeans are more important as feed grains. The authors note that “we have preferentially focused our crop improvement efforts on feeding animals and cars rather than on crops that feed people and are the basis of food security in much of the world.”

The report also states the more optimistic findings of another new paper which suggests that the world will not have to dig up a lot more land for farming in order to feed 9 billion people in 2050, as the Food and Agriculture Organisation has argued.

Instead, it says, thanks to slowing population growth, land currently ploughed（犁）up for crops might be able to revert (回返) to forest or wilderness. This could happen. The trouble is that the prediction assumes continued improvements in productions, which may not actually happen.

1.What significant problem does the writer think we should pay more attention to?

A. The decline of the grain production growth

B. News headlines in the leading media.

C. Food riots and hunger.

D. The food supply in populous countries.

2.Why does the author mention India and China in particular?

A. Their big populations are causing worldwide concerns.

B. Their food yields have begun to decrease sharply in recent years.

C. Their self-sufficiency is vital to the stability of world food markets.

D. Their food self-sufficiency has been taken for granted.

3.What does the new study by the two universities say about recent crop improvement efforts?

A. They fail to produce the same remarkable results as before the 1980s.

B. They contribute a lot to the improvement of human food production.

C. They play a major role in guaranteeing the food security of the world.

D. They focus more on the increase of animal feed than human food grains.

4.What does the Food and Agriculture Organisation say about world food production in the coming decades?

A. The growing population will greatly increase the pressure on world food supplies.

B. The optimistic prediction about food production should be viewed with caution.

C. The slowdown of the growth in yields of major food crops will be reversed.

D. The world will be able to feed its population without expanding the area of farmland.

5.How does the author view the argument of the Food and Agriculture Organisation?

A. It is built on the findings of a new study.

B. It is based on a doubtful assumption.

C. It is backed by strong evidence.

D. It is open to further discussion.

Answer

1.A

2.C

3.D

4.D

5.B

【解析】

试题分析：作者分析了明尼苏达大学和蒙特利尔麦克吉尔大学的一项新研究，并指出了关于粮食方面的一些问题。

1.A细节理解题。由第一段中的“But the trend lying behind these matters is rarely talked about. This is the decline in the growth in yields of some of the world’s major crops. A new study by the University of Minnesota and McGill University in Montreal looks at where, and how far, this decline is occurring”可知，世界上一些主要农作物的产量下降，人们很少关注到这一点。the University of Minnesota and McGill University in Montreal的新研究研究了农作物产量下降的区域和程度。下文围绕这一研究做了阐述。故作者想吸引我们对农作物产量下降这一现象的关注。A选项正确。

2.C细节理解题。由第三段中的“One is that it has been particularly sharp in the world’s most populous(人口多的)countries, India and China. Their ability to feed themselves has been an important source of relative stability both within the countries and on world food markets. That self-sufficiency cannot be taken for granted if yields continue to slow down or reverse”可知，中国和印度这两个国家的粮食自给自足能力影响着它们本国和世界粮食市场的稳定。所以，作者尤其以这两个国家为例。故C选项正确。

3.D细节理解题。由倒数第三段中的“The authors note that ‘we have preferentially focused our crop improvement efforts on feeding animals and cars rather than on crops that feed people and are the basis of food security in much of the world’”可知，这些努力主要以提高那些喂养动物的农作物的产量为中心，而不是以提高那些养活人类的农作物的产量为中心。故D选项正确。

4.D细节理解题。由倒数第二段中的“the world will not have to dig up a lot more land for farming in order to feed 9 billion people in 2050, as the Food and Agriculture Organization has argued”可知，the Food and Agriculture Organization提出，未来，世界不用再开拓更多的耕种土地，就可以养活90亿人口。故D选项说法正确。

5.

考点：考查说明文类短文阅读