C
“What would the world be if there were no hunger?” It’s a question that Professor Crystal would ask her students. They found it hard to answer, she wrote later, because imagining something that isn’t part of real life—and learning how to make it real—is a rare skill. It is taught to artists and engineers, but much less often to scientists. Crystal set out to change that, and helped to create a global movement. The result—an approach known as systems thinking—is now seen as essential in meeting global challenges.
Systems thinking is crucial to achieving targets such as zero hunger and better nutrition because it requires considering the way in which food is produced, processed, delivered and consumed, and looking at how those things intersect (交叉 ) with human health, the environment, economics and society. According to systems thinking, changing the food system—or any other network—requires three things to happen. First, researchers need to identify all the players in that system; second, they must work out how they relate to each other; and third, they need to understand and quantify the impact of those relationships on each other and on those outside the system.
Take nutrition. In the latest UN report on global food security, the number of undernourished (营养不良 )people in the world has been rising, despite great advances in nutrition science. Tracking of 150 biochemicals in food has been important in revealing the relationships between calories, sugar, fat and the occurrence of common diseases. But using machine learning and artificial intelligence, some scientists propose that human diets consist of at least 26,000 biochemicals—and that the vast majority are not known.This shows that we have some way to travel before achieving the first objective of systems t hinking - which,in this example, is to identify more constituent parts of the nutrition system.
A systems approach to creating change is also built on the assumption that everyone in the system has equal power. But as some researchers find, the food system is not an equal one. A good way to redress (修正 ) such power imbalance is for more universities to do what Crystal did and teach students how to think using a systems approach.
More researchers, policymakers and representatives from the food industry must learn to look beyond their direct lines of responsibility and adopt a systems approach. Crystal knew that visions alone don’t produce results, but concluded that “we’ll never produce results that we can’t envision”.
28. The author uses the question underlined in Paragraph 1 to ________.
有87198c4b途优件6fcba777限ad3b公c235司4419软根学是技秀广元ae0a东得-网升点得术科慧
A. illustrate an argument B. highlight an opinion
C. introduce the topic D. predict the ending
29. What can be inferred about the field of nutrition?
A. The first objective of systems thinking hasn’t been achieved.
B. The relationships among players have been clarified.
C. Machine learning can solve the nutrition problem.
D. The impact of nutrition cannot be quantified.
30. As for systems thinking, which would the author agree with?
A. It may be used to justify power imbalance.
B. It can be applied to tackle challenges.
C. It helps to prove why hunger exists.
-6098e72c优费公c23591a94c80慧的东得857a是网b03f元ae0ab20b司4419广方学是升点得术方科a3b4有87198c4b限ad3b费西途5f3a57fe软根件6fcba777技秀
D. It goes beyond human imagination.
【答案】28. C29. A30. B
【解析】
【导语】这是一篇说明文。文章主要介绍了解决全球挑战的重要方法——系统思维。
【28题详解】
推理判断题。由文章第一段““What would the world be if there were no hunger?” It’s a question that Professor Crystal would ask her students. They found it hard to answer, she wrote later, because imagining something that isn’t part of real life—and learning how to make it real—is a rare skill. It is taught to artists and engineers, but much less often to scientists. Crystal set out to change that, and helped to create a global movement. The result—an approach known as systems thinking—is now seen as essential in meeting global challenges. (“如果没有饥饿，世界会是什么样子?”这是 Crystal教授会问学生的问题。她后来写道，他们发现很难回答这个问题，因为想象一些不属于现实生活的东西，并学习如何将其变成现实是一项罕见的技能。它被教授给艺术家和工程师，但很少教授给科学家。Crystal着手改变这种状况，并帮助创建了一个全球运动。结果，一种被称为系统思维的方法现在被视为应对全球挑战的关键。)”可知，文章开头提出问题是为了引出话题-系统思维的方法被视为应对全球挑战的关键。故选C项。
【29题详解】
细节理解题。由文章第三段“This shows that we have some way to travel before achieving the first objective of systems t hinking - which,in this example, is to identify more constituent parts of the nutrition system.(这表明，在实现系统思考的第一个目标之前，我们还有一段路要走——在本例中，这是为了确定营养系统的更多组成部分。)”可知，实现系统思维的第一个目标还有一段路需要走，现尚未实现。故选A项。
【30题详解】
-6098e72c优费元ae0ab20b软根量科a3b4学有87198c4b公c23591a94c80b586学是东得857a是升点得术方司4419技秀广方限ad3b费西b6bffeb4479c途5f3a57fe网b03f件6fcba777慧的
推理判断题。由文章第一段“Crystal set out to change that, and helped to create a global movement. The result—an approach known as systems thinking—is now seen as essential in meeting global challenges.(Crystal着手改变这种状况，并帮助创建了一个全球运动。结果，一种被称为系统思维的方法现在被视为应对全球挑战的关键。)”可知，作者认为该系统能应用于解决挑战。故选B项。编辑：小徐