1. (I) Aerobic dancing, which exercises the whole body, is a popular type of exercise and is available at most community centers. (II) Stress aerobics primarily exercises the muscles in the upper legs. (Ill) There people can exercise at their own pace with guidance from experienced instructors. (IV) Lively music and familiar routines make the workout enjoyable. (V) Further, committing oneself to a Schedule and exercising with friends can improve motivation.
2. (I) Sir Francis Galton is an English anthropologist and a pioneer of human intelligence studies. (II) He made important contributions to many fields of knowledge. (Ill) His research revealed important facts about the intellectual and physical characteristics that are passed on from one generation to the next. (IV) Galtons family included men and women of exceptional ability one of whom was his cousin Charles Darwin. (V) He also discovered that characteristics of two different generations could be plotted against one another.
3. (I) Never in Hong Kongs history have so many people taken to the streets in protest against their own government. (II) Hong Kong officials have tried to play down the event. (III) A top official responsible for security, remarked dismissively, beforehand, that people might join the protest just because it was something to do on a public holiday. (IV) Mr Tung was anyhow unpopular and he had failed to revive Hong Kongs depressed economy. (V) It was, in fact, the sixth anniversary of Hong Kongs return to China.
4. (I) There are many different types of mercury. (lI) But the most dangerous of all are the organic mercury compounds. (Ill) Elemental mercury is used in thermometers, and is the least toxic form. (IV) These are toxic by ingestion, inhalation or contact. (V) Since they are not removed from the body, their concentrations gradually build up, particularly in the brain.
5. (I) Currently there has been a noticeable drop in applications for MBA courses in the USA. (II) If the economy picks up, the situation could change. (Ill) This is partly because fewer people can afford the annual tuition fee. (IV) Partly also, because new visa restrictions are making it harder for foreigners to apply. (V) But most important of all one is no longer sure of landing a well-paid job on graduation.
6. (I) Italy has a sad record of journalists succumbing to pressure from politicians and officials. (II) Indeed, many of them are virtually bought by powerful interests. (Ill) They find it hard to resist the combination of temptation and pressure that the government has at its disposal. (IV) Naturally, the country as a whole realizes what is happening and has no confidence in its newspapers. (V) Corriere della Sera, which is based in Milan, is Italys biggest newspaper.