22. Not only did it solve a problem that had intrigued man for ages， but， more importantly， it literally opened the door to exploration of the universe. (3A0101)
23. Life itself was a perpetual and punishing search for food： some families grew manioc and other starchy crops in small garden plots cleared from the forest， while other members of the tribe scoured the country for small game and promising fish holes. (3A0302)
24. There is clear-cut evidence that， for a period of at least one year， supervision which increases the direct pressure for productivity can achieve significant increases in production. However， such short-term increases are obtained only at a substantial and serious cost to the organisation. (3A0403)
25. Of growing interest is the way in which much of what we might see as diaposable is， elsewhere， recycled and reused. (3A0301)
26. These misconceptions do not remain isolated but become incorporated into a multifaceted， but organised， conceptual framework， making it and the component ideas， some of which are erroneous， more robust but also accessible to modification. (4A0101)
27. The explosion in demand for accommodation in the inner suburbs of Melbourne suggests a recent change in many people’s preferences as to where they live.
28. Take the exercise theory.
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