1. Visual recognition involves storing and retrieving of memories.A. Psychologists of the Gestalt School maintain that objects are recognised as a whole in a procedure.B. Neural activity, triggered by the eye, forms an image in the brain’s memory system that constitutes an internal representation of the viewed object.C. Controversy surrounds the question of whether recognition is a single one-step procedure or a serial step-by-step one.D. When an object is encountered again, it is matched with its internal recognition and thereby recognised.6. The internal representation is matched with the retinal image in a single operation.
1. The idea of sea-floor spreading actually preceded the theory of plate tectonics.A. The hypothesis was soon substantiated by the discovery that periodic reversals of the earth’s magnetic field are recorded in the oceanic crust.B. In its original version, it described the creation and destruction of ocean floor, but it did not specify rigid lithospheric plates.C. An explanation of this process devised by F.J. Vine and D.H. Mathews of Princeton is now generally accepted.D. The sea-floor spreading hypothesis was formulated chiefly by Harry H. Hess of Princeton University in the early 1960’s.6. As magma rises under the mid-ocean, ferromagnetic minerals in the magma become magnetised in the direction of the geomagnetic field.
1. The history of mammals dates back at least to Triassic time. A. Miocene and Pliocene time was marked by culmination of several groups and continued approach towards modern characters.B. Development was retarded, however, until the sudden acceleration of evolutional change that occurred in the oldest Paleocene.C. In the Oligocene Epoch, there was further improvement, with appearance of some new lines and extinction of others.D. This led in Eocene time to increase in average size, larger mental capacity, and special adaptations for different modes of life.6. The peak of the career of mammals in variety and average large size was attained in this epoch.
1. The fragile Yugoslav state has an uncertain future.A. Thus, there will surely be chaos and uncertainty if the people fail to settle their differences.B. Sharp ideological differences already exist in the country.C. Ethnic, regional, linguistic and material disparities are profound.D. The country will also lose the excellent reputation it enjoyed in the international arena.6. At worst, it will once more become vulnerable to international conspiracy and intrigue.