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Write an essay of 160-200 words based on the following drawing.In your essay, you should first descr...

Write an essay of 160-200 words based on the following drawing.In your essay, you should first describe the drawing, then interpret its meaning, and give your comment on it.
You should write neatly on ANSWER SHEET 2
{图}
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1 单选题 0.5分
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 the 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.
1选？
  • A.although
  • B.as
  • C.but
  • D.while
2 单选题 0.5分
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 the 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.
2选？
  • A.above
  • B.unlike
  • C.excluding
  • D.besides
3 单选题 0.5分
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 the 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.
3选？
  • A.limited
  • B.committed
  • C.dedicated
  • D.confined
4 单选题 0.5分
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 the 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.
4选？
  • A.catching
  • B.ignoring
  • C.missing
  • D.tracking
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