A.基础概念题1.声音的发生:由物体的 而产生. 停止.发声也停止. 查看更多

 

题目列表(包括答案和解析)

Answer the questions(根据短文内容回答下列问题)
Your Nose is Busy and Important
Your nose has many important jobs, and is always busy.
Smelling
Smelling helps you gather information about the world around you. A good scent (气体),like flowers, brings you pleasure. A bad scent, like smoke or sour milk, warns you of danger. Most things around you release scent particles (微粒) into the air. These invisible chemicals enter the nose when you breathe. Nerves in the nose send information to the brain to identify a smell. You are able to recognize thousands of smells.
Breathing
Most of the air you breathe enters through your nose. The nose uses hair and mucus (粘液) to clean dust and germs (细菌) out of the air. The air that enters your nose contains oxygen. Your body uses oxygen to unlock the energy in the food you eat.  Even when you sleep, your body needs energy to keep your heart beating and your brain working.
Tasting
Your nose helps you enjoy food. Flavor is a mixture of taste and smell. The smell of the food helps you identify what you are eating. The sense of smell contributes more to (贡献) food flavor than the sense of taste .When you are sick and have a stuffy nose, your food doesn’t taste as good because without smell, food loses most of its flavor.
Smell memory
Smells can bring back memories. Your brain uses a process to create a picture in your mind from the odors(气味)you smell. Smells can affect your feelings because the part of the brain that helps you identify smells is close to the area that affects your emotions, mood and memory. More smell memories are collected as you get older.
Your nose has many important jobs, and is more than just a smeller!
【小题1】How many important jobs does a nose do according to the passage? What are they?
【小题2】Smelling helps you recognize thousands of smells, doesn't it?
【小题3】What does the nose use to clean dust and germs out of air?
【小题4】What happens to your food if you are sick and have a stuffy nose?
【小题5】How do smells bring back memories?
【小题6】What do you think of your nose? Why do you think so?

查看答案和解析>>

Answer the questions(根据短文内容回答下列问题)
Your Nose is Busy and Important
Your nose has many important jobs, and is always busy.
Smelling
Smelling helps you gather information about the world around you. A good scent (气体),like flowers, brings you pleasure. A bad scent, like smoke or sour milk, warns you of danger. Most things around you release scent particles (微粒) into the air. These invisible chemicals enter the nose when you breathe. Nerves in the nose send information to the brain to identify a smell. You are able to recognize thousands of smells.
Breathing
Most of the air you breathe enters through your nose. The nose uses hair and mucus (粘液) to clean dust and germs (细菌) out of the air. The air that enters your nose contains oxygen. Your body uses oxygen to unlock the energy in the food you eat.  Even when you sleep, your body needs energy to keep your heart beating and your brain working.
Tasting
Your nose helps you enjoy food. Flavor is a mixture of taste and smell. The smell of the food helps you identify what you are eating. The sense of smell contributes more to (贡献) food flavor than the sense of taste .When you are sick and have a stuffy nose, your food doesn’t taste as good because without smell, food loses most of its flavor.
Smell memory
Smells can bring back memories. Your brain uses a process to create a picture in your mind from the odors(气味)you smell. Smells can affect your feelings because the part of the brain that helps you identify smells is close to the area that affects your emotions, mood and memory. More smell memories are collected as you get older.
Your nose has many important jobs, and is more than just a smeller!
【小题1】How many important jobs does a nose do according to the passage? What are they?
【小题2】Smelling helps you recognize thousands of smells, doesn't it?
【小题3】What does the nose use to clean dust and germs out of air?
【小题4】What happens to your food if you are sick and have a stuffy nose?
【小题5】How do smells bring back memories?
【小题6】What do you think of your nose? Why do you think so?

查看答案和解析>>

When other nine-year-old kids were playing games, she was working at a petrol station. When other teens were studying or going out, she struggled to find a place to sleep on the street. But she overcame these terrible setbacks to win a highly competitive scholarship(奖学金)and gain entry to Harvard University. And her amazing story has inspired a movie, “Homeless to Harvard: The Liz Murray Story”, shown in late April.
 Liz Murray, a 22-year-old American girl, has been writing a real-life story of willpower and determination. Liz grew up in the shadow of two drug-addicted(吸毒)parents. There was never enough food or warm clothes in the house. Liz was the only member of the family who had a job. Her mother had AIDS and died when Liz was just 15 years old. The effect of that loss became a turning point in her life. Connecting the environment in which she had grown up with how her mother had died, she decided to do something about it.
 Liz went back to school. She threw herself into her studies, never telling her teachers that she was homeless. At night, she lived on the streets.“What drove me to live on had something to do with understanding, by understanding that there was a whole other way of being. I had only experienced a small part of the society,”she wrote in her book Breaking Night.
 She admitted that she used envy to drive herself on. She used the benefits that come easily to others, such as a safe living environment, to encourage herself that “next to nothing could hold me down”. She finished high school in just two years and won a full scholarship to study at Harvard University. But Liz decided to leave her top university a couple of months earlier this year in order to take care of her father, who has also developed AIDS. “I love my parents so much. They are drug addicts. But I never forget that they love me all the time.”
  Liz wants moviegoers to come away with the idea that changing your life is “as simple as making a decision”.
【小题1】In which order did the following things happen to Liz?
  a. Her mother died of AIDS.    b. She worked at a petrol station.
  c. She got admitted into Harvard. d. The movie about her life was put on.
  e. She had trouble finding a place to sleep.
A.b, a, e, c, d  B.a, b, c, e, dC.e, d, b, a, cD.b, e, a, d, c
【小题2】The main idea of the passage is ________.
A.how Liz managed to enter Harvard UniversityB.what a hard time Liz had in her childhood
C.why Liz loved her parents so muchD.how Liz struggled to change her life
【小题3】What actually made her go towards her goal?
A.Envy and encouragement.B.Willpower and determination.
C.Decisions and understanding.D.Love and respect for her parents.
【小题4】When she wrote “What drove me to live on...I had only experienced a small part of the society”, she meant that ________.
A.she had little experience of social lifeB.she could hardly understand the society
C.she would do something for her own lifeD.she needed to travel more around the world

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Answer the questions(根据短文内容回答下列问题)
Your Nose is Busy and Important
Your nose has many important jobs, and is always busy.
Smelling
Smelling helps you gather information about the world around you. A good scent (气体),like flowers, brings you pleasure. A bad scent, like smoke or sour milk, warns you of danger. Most things around you release scent particles (微粒) into the air. These invisible chemicals enter the nose when you breathe. Nerves in the nose send information to the brain to identify a smell. You are able to recognize thousands of smells.
Breathing
Most of the air you breathe enters through your nose. The nose uses hair and mucus (粘液) to clean dust and germs (细菌) out of the air. The air that enters your nose contains oxygen. Your body uses oxygen to unlock the energy in the food you eat.  Even when you sleep, your body needs energy to keep your heart beating and your brain working.
Tasting
Your nose helps you enjoy food. Flavor is a mixture of taste and smell. The smell of the food helps you identify what you are eating. The sense of smell contributes more to (贡献) food flavor than the sense of taste .When you are sick and have a stuffy nose, your food doesn’t taste as good because without smell, food loses most of its flavor.
Smell memory
Smells can bring back memories. Your brain uses a process to create a picture in your mind from the odors(气味)you smell. Smells can affect your feelings because the part of the brain that helps you identify smells is close to the area that affects your emotions, mood and memory. More smell memories are collected as you get older.
Your nose has many important jobs, and is more than just a smeller!
【小题1】How many important jobs does a nose do according to the passage? What are they?
【小题2】Smelling helps you recognize thousands of smells, doesn't it?
【小题3】What does the nose use to clean dust and germs out of air?
【小题4】What happens to your food if you are sick and have a stuffy nose?
【小题5】How do smells bring back memories?
【小题6】What do you think of your nose? Why do you think so?

查看答案和解析>>

Answer the questions(根据短文内容回答下列问题)
Your Nose is Busy and Important
Your nose has many important jobs, and is always busy.
Smelling
Smelling helps you gather information about the world around you. A good scent (气体),like flowers, brings you pleasure. A bad scent, like smoke or sour milk, warns you of danger. Most things around you release scent particles (微粒) into the air. These invisible chemicals enter the nose when you breathe. Nerves in the nose send information to the brain to identify a smell. You are able to recognize thousands of smells.
Breathing
Most of the air you breathe enters through your nose. The nose uses hair and mucus (粘液) to clean dust and germs (细菌) out of the air. The air that enters your nose contains oxygen. Your body uses oxygen to unlock the energy in the food you eat.  Even when you sleep, your body needs energy to keep your heart beating and your brain working.
Tasting
Your nose helps you enjoy food. Flavor is a mixture of taste and smell. The smell of the food helps you identify what you are eating. The sense of smell contributes more to (贡献) food flavor than the sense of taste .When you are sick and have a stuffy nose, your food doesn’t taste as good because without smell, food loses most of its flavor.
Smell memory
Smells can bring back memories. Your brain uses a process to create a picture in your mind from the odors(气味)you smell. Smells can affect your feelings because the part of the brain that helps you identify smells is close to the area that affects your emotions, mood and memory. More smell memories are collected as you get older.
Your nose has many important jobs, and is more than just a smeller!
【小题1】How many important jobs does a nose do according to the passage? What are they?
【小题2】Smelling helps you recognize thousands of smells, doesn't it?
【小题3】What does the nose use to clean dust and germs out of air?
【小题4】What happens to your food if you are sick and have a stuffy nose?
【小题5】How do smells bring back memories?
【小题6】What do you think of your nose? Why do you think so?

查看答案和解析>>


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