结合课堂讲解的部分，有时间的同学可以练习一下快速理解以下这些来自剑桥考题当中的长难句：
1. There are examples of languages that have survived in written form and then been revived by later generations. (4A0201)
2. In New Zealand， classes for children have slowed the erosion of Maori and rekindled interest in the language. (4A0201)
3. The former US policy of running Indian reservations schools in English， for example， effectively put languages such as Navajo on the danger list. (4A0201)
4. It is not necessarily these small languages that are about to disappear. (4A0201)
5. However， it wasn’t until the discovery of the reaction principle， which was the key to space travel and so represents one of the great milestones in the history of scientific thought， that rocket technology was able to develop. (3A0101)
6. What makes a language endangered is not just the number of speakers， but how old they are. (4A0201)
7. In the Native American Navajo nation， which sprawls across four states in the American south-west， the native language is dying.(4A0201)
8. The problem of how health-care resources should be allocated or apportioned， so that they are distributed in both the most just and most efficient way， is not a new one. (4A0403)
9. Every health system in an economically developed society is faced with the need to decide (either formally or informally) what proportion of the community’s total resources should be spent on health-care; how resources are to be apportioned; what diseases and diabilities and which forms of treatment are to be given priority; which members of the community are to be given special consideration in respect of their health needs; and which forms of treatment are the most cost-effective. (4A0403)
10. People are not in a position to exercise personal liberty and to be self-determining if they are poverty-stricken， or deprived of basic education， or do not live within a context of law and order. (4A0403)
11. The spread of monoculture and use of high-yielding varieties of crops have been accompanied by the disappearance of old varieties of food plants which might have provided some insurance against pests or diseases in future. (3A0202)
12. Animals at play often use unique signs—tail-wagging in dogs， for example—to indicate that activity superficially resembling adult behaviour is not really in earnest. (4A0203)
