TAILIEUCHUNG - Toefl ibt internet based test 2006 - 2007 part 89

Although you need to know more English than it is possible to include in one chapter, this review will help you apply the English you know to the test situation. You will improve your English proficiency as measured by the TOEFL | EXPLANATORY OR EXAMPLE ANSWERS AND AUDIO SCRIPTS FOR MODEL TESTS MODEL TEST 7 747 Reflection Is what we see in a mirror so every reflection has a mirror line. A reflection of the letter R is a mirror image or a backwards letter R. So. unlike the rotation around a circle this type of symmetry flips the object over. 746 ANSWERS AND AUDIO SCRIPTS FOR ACTIVITIES. QUIZZES. AND MODEL TESTS stituent configuration on opposite sides of a dividing line or plane or about a center or an axis. And it s also identified in the same source as beauty as a result of balance or harmonious arrangement. So we experience beauty and harmony when symmetry of form is expressed and the form may be interpreted by any of the senses as. uh harmonious. But in this class we re going to focus on symmetry in the visual arts and that s symmetry in a visual plane. Let s just look at some examples. In general there are four types of symmetry in a plane and a pattern is symmetrical if there s at least one type of symmetry. So let me show you the four types since it s much easier to understand when you see them. This is rotation symmetry. For this example. I used the letter R but any object could have been used. And in the rotation the object in this example the letter R is turned around a center. In this case there s a right angle but any angle could have been selected. Reflection Is. wait a minute. Okay here s the slide. Q8 Copyrighted material EXPLANATORY OR EXAMPLE ANSWERS AND AUDIO SCRIPTS FOR MODEL TESTS MOOEL TEST 7 751 Audio 13. Identify the main periods of mass extinction. Answer A Permian C Cretaceous Audio 14. Listen again to part of the lecture and then answer the following question. Replay You see it s obvious from the fossil records that species exist during a certain geological time period and then they disappear and we have solid evidence for that. But why they disappear is. well more speculative. Audio Why does the professor say this Replay Bui why they disappear is well more .

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