单选题 Many developing countries continue to export the traditional goods for which they have always been known, like tea from India and Sri Lanka, tin (锡) from Malaysia and Indonesia, bananas from Central America. The highly industrialized countries of western Europe, however, focus on selling manufactured goods (制成品): Electrical and engineering equipment, high-tech products like computers and jet planes, which are worth millions of pounds.
But these patterns (格局) of trade are changing. Developing nations are creating their own manufacturing industries, and their products are often cheaper than those of Europe and North America. This is because of lower labor cost and the free availability (获得) of local materials, and they are not only cheaper, but often of higher quality when experience has been gained.

单选题 Indonesia is rich in ______.

单选题 The traditional products from developing countries are usually ______.

单选题 Manufactured goods usually refer to ______.

单选题 The highly industrialized countries usually refer to those ______.

单选题 What is this passage talking about?