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The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, (1) this is largely because, (2) animals, we stand upright. This means that our noses are (3) to perceiving those smells which float through the air, (4) the majority of smells which stick to surfaces. In fact, (5) , we are extremely sensitive to smells, (6) we do not generally realize it. Our noses are capable of (7) human smells even when these are (8) to far below one part in one million. Strangely, some people find that they can smell one type of flower but not another, (9) others are sensitive to the smells of both flowers. This may be because some people do not have the genes necessary to generate (10) smell receptors in the nose. These receptors are the cells which sense smells and send (11) to the brain. However, it has been found that even people insensitive to a certain smell (12) can suddenly become sensitive to it when (13) to it often enough. The explanation for insensitivity to smell seems to be that brain finds it (14) to keep all smell receptors working all the time but can (15) new receptors if necessary. This may (16) explain why we are not usually sensitive to our own smells—we simply do not need to be. We are not (17) of the usual smell of our own house but we (18) new smells when we visit someone else’s. The brain finds it best to keep smell receptors (19) for unfamiliar and emergency signals (20) the smell of smoke, which might indicate the danger of fire.
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The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, (1) this is largely because, (2) animals, we stand upright. This means that our noses are (3) to perceiving those smells which float through the air, (4) the majority of smells which stick to surfaces. In fact, (5) , we are extremely sensitive to smells, (6) we do not generally realize it. Our noses are capable of (7) human smells even when these are (8) to far below one part in one million. Strangely, some people find that they can smell one type of flower but not another, (9) others are sensitive to the smells of both flowers. This may be because some people do not have the genes necessary to generate (10) smell receptors in the nose. These receptors are the cells which sense smells and send (11) to the brain. However, it has been found that even people insensitive to a certain smell (12) can suddenly become sensitive to it when (13) to it often enough. The explanation for insensitivity to smell seems to be that brain finds it (14) to keep all smell receptors working all the time but can (15) new receptors if necessary. This may (16) explain why we are not usually sensitive to our own smells—we simply do not need to be. We are not (17) of the usual smell of our own house but we (18) new smells when we visit someone else’s. The brain finds it best to keep smell receptors (19) for unfamiliar and emergency signals (20) the smell of smoke, which might indicate the danger of fire.
Painting, the execution of forms and shapes on a surface by means of pigment, has been (1) practiced by humans for some 20,000 years. Together with other activities (2) ritualistic in origin but have come to be designated as artistic (such as music or dance), painting was one of the earliest ways in which man (3) to express his own personality and his (4) understanding of an existence beyond the material world. (5) music and dance, however, examples of early forms of painting have survived to the present day. The modern eye can derive aesthetic as well as antiquarian satisfaction (6) the 15,000-year-old cave murals of Lascaux—some examples (7) to the considerable powers of draftsmanship of these early artists. And painting, like other arts, exhibits universal qualities that (8) for viewers of all nations and civilizations to understand and appreciate. The major (9) examples of early painting anywhere in the world are found in Western Europe and the former Soviet Union. But some 5,000 years ago, the areas in which important paintings were executed (10) to the eastern Mediterranean Sea and neighboring regions. (11) , Western shared a European cultural tradition—the Middle East and Mediterranean Basin and, later, the countries of the New World. Western painting is in general distinguished by its concentration on the representation of the human (12) , whether in the heroic context of antiquity or the religious context of the early Christian and medieval world. The Renaissance (13) this traitor through a (14) examination of the natural world and an investigation of balance, harmony, and perspective in the visible world, linking painting (15) the developing sciences of anatomy and optics. The first real (16) from figurative painting came with the growth of landscape painting in the 17th and 18th centuries. The landscape and figurative traditions developed together in the 19th century in an atmosphere that was increasingly (17) "painterly" qualities of the (18) of light and color and the expressive qualities of paint handling. In the 20th century these interests (19) to the development of a third major tradition in Western painting, abstract painting, which sought to (20) and express the true nature of paint and painting through action and form.
Painting, the execution of forms and shapes on a surface by means of pigment, has been (1) practiced by humans for some 20,000 years. Together with other activities (2) ritualistic in origin but have come to be designated as artistic (such as music or dance), painting was one of the earliest ways in which man (3) to express his own personality and his (4) understanding of an existence beyond the material world. (5) music and dance, however, examples of early forms of painting have survived to the present day. The modern eye can derive aesthetic as well as antiquarian satisfaction (6) the 15,000-year-old cave murals of Lascaux—some examples (7) to the considerable powers of draftsmanship of these early artists. And painting, like other arts, exhibits universal qualities that (8) for viewers of all nations and civilizations to understand and appreciate. The major (9) examples of early painting anywhere in the world are found in Western Europe and the former Soviet Union. But some 5,000 years ago, the areas in which important paintings were executed (10) to the eastern Mediterranean Sea and neighboring regions. (11) , Western shared a European cultural tradition—the Middle East and Mediterranean Basin and, later, the countries of the New World. Western painting is in general distinguished by its concentration on the representation of the human (12) , whether in the heroic context of antiquity or the religious context of the early Christian and medieval world. The Renaissance (13) this traitor through a (14) examination of the natural world and an investigation of balance, harmony, and perspective in the visible world, linking painting (15) the developing sciences of anatomy and optics. The first real (16) from figurative painting came with the growth of landscape painting in the 17th and 18th centuries. The landscape and figurative traditions developed together in the 19th century in an atmosphere that was increasingly (17) "painterly" qualities of the (18) of light and color and the expressive qualities of paint handling. In the 20th century these interests (19) to the development of a third major tradition in Western painting, abstract painting, which sought to (20) and express the true nature of paint and painting through action and form.
The human nose is an underrated tool. Humans are often thought to be insensitive smellers compared with animals, (1) this is largely because, (2) animals, we stand upright. This means that our noses are (3) to perceiving those smells which float through the air, (4) the majority of smells which stick to surfaces. In fact, (5) , we are extremely sensitive to smells, (6) we do not generally realize it. Our noses are capable of (7) human smells even when these are (8) to far below one part in one million. Strangely, some people find that they can smell one type of flower but not another, (9) others are sensitive to the smells of both flowers. This may be because some people do not have the genes necessary to generate (10) smell receptors in the nose. These receptors are the cells which sense smells and send (11) to the brain. However, it has been found that even people insensitive to a certain smell (12) can suddenly become sensitive to it when (13) to it often enough. The explanation for insensitivity to smell seems to be that brain finds it (14) to keep all smell receptors working all the time but can (15) new receptors if necessary. This may (16) explain why we are not usually sensitive to our own smells—we simply do not need to be. We are not (17) of the usual smell of our own house but we (18) new smells when we visit someone else’s. The brain finds it best to keep smell receptors (19) for unfamiliar and emergency signals (20) the smell of smoke, which might indicate the danger of fire.
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