2014年4月雅思考试摸底题及答案(第一套)_第3页

　21. ____________________ is the branch of knowledge dealing with scientific and industrial methods and their　practical use in industry.

　　22. Our ____________________ are the people who lived in past times and passed on their ideas and culture to　our modern civilisations.

　　23. A ____________________, for example a donkey, is a living thing produced from the parents of different  breeds.

　　24. In electronic circuits, the various components such as resistors, transistors or capacitors are not drawn exactly　as they are, but are represented by ____________________.

　　25. A ____________________ is a set of beliefs, which could be religious or scientific, which people are　expected to accept without challenging it.

　　26. The results of the experiment were uncertain and it is now ____________________ whether we shall receive　further funding from the university to continue our research.

　　27. An ____________________ is produced by artists when they use knives or chisels to cut their designs into a　metal or wooden surface which is later inked and printed onto paper.

　　28. Many travelling families who previously lived their lives in mobile caravans, moving from place to place, are　now building ____________________ camp sites to find a more settled way of life.

　　29. The ____________________ is the bone structure which surrounds and protects our brains.

　　30. ____________________ is the term used for trees which are taken from forests to provide wood for use in the　construction of buildings.