An allergy (過敏反應(yīng)) is a strong reaction to a substance. Many things can cause allergies. The most common cause is pollen (花粉), which is usually produced by trees in the spring, grasses in the summer and weeds in the fall, as part of their reproductive process.

     Other causes include organisms, chemicals, plants and dead skin particles (微粒) from dogs and cats can also cause allergic reactions. So can insect stings and some food.

     The most common kind of allergic reactions is itchy (癢的), watery eyes and a blocked or watery nose. Allergies can also cause red, itchy skin. Some reactions can be life-threatening, for example, when breathing passages become blocked.

     It is not always easy to avoid allergies. Drugs may offer an effective treatment. Another treatment used in some cases is called immunotherapy (免疫療法). A patient is injected with small amounts of the allergy-causing substance. The idea is that larger and larger amounts are given over time until the patient develops a resistance in his body.

     In the United States, experts estimate that up to 8% of young children have food allergies. Every year these allergies cause about 30,000 cases with severe reactions that require immediate treatment. It can result in breathing trouble and in some cases death. It is said that about 100 to 200 people will die. It says most of the reactions are caused by peanuts and tree nuts like walnuts.

      People can also be allergic to medicines. The American Academy of Allergy, Asthma and Immunology says about 10% of bad reactions to commonly used medicines are allergic. In other words, a person’s immune system overreacts and produces an allergic reaction. The most common reactions include skin rashes (皮疹), itching, breathing problems and swelling in areas such as the face.

Allergies seldom occur in winter because ______.

  A. plants don’t flower in cold weather      B. people usually wear thick clothes

  C. pollen is active below freezing point     D. the weather is not too cold for viruses

What will happen if one’s breathing passages get blocked?

  A. It is nothing serious.                 B. One’s life is at risk.

  C. One has to be sent to hospital.         D. One is sure to breathe easily.

According to immunotherapy, the patient is supposed to ______.

  A. take some medicines to produce antibodies

  B. have immediate operations

  C. be given the allergy-causing substance until he develops a resistance

  D. be exposed to enough allergy-causing substances

The best title would be “________”.

  A. The ABCs of Allergies                 B. The Cause of Allergies

  C. The Treatment of Allergies              D. The Prevention of Allergies

【小題1】A

【小題1】B

【小題1】C

【小題1】A


解析:

略

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：2012-2013學(xué)年江蘇省如皋中學(xué)高一第一次階段練習(xí)英語試卷（帶解析） 題型：閱讀理解

“How was school, Ben?” I asked my grandson after he began kindergarten(幼兒園) this year. “The work is too long… and there’s not enough time to play,” he replied.
I couldn’t help but remember Ben’s own mother, my daughter, Jane, and her reaction(反應(yīng)) to the first day of school. Julie was also disappointed with the first day of school and so was her little sister. My three-year-old daughter announced angrily after her big sister got on the big yellow school bus, “I want to go ‘sool’ and you not let me!”
When Julie returned home that afternoon, I asked her the same question that I asked Ben, “How was school, Julie?” Julie replied, “I didn’t learn to read today.”
This year as the school bus passed my house, my mind went back to those school days again. I could almost smell the chalk dust in the air. I also wonder what the children these days manage to get chosen to do in order to get out of school for a few moments since there are no erasers to clean. It was fun to be “chosen” for eraser cleaning duty. This was a task finished by going outside and beating erasers together while sneezing and coughing. No wonder so many babies now have allergies(過敏癥), and it’s simply because we all have chalk dust in our lungs!
On the first day of school, the expectation was so great that I would be ready long before it was time to leave for school. We didn’t have backpacks because we had cigar boxes. We carried our small supplies inside a cigar box from one of the local stores. We saved the cigar boxes and used them from year to year until they fell apart.
The first day of school was exciting. It was a new beginning. The doors of knowledge had been opened. The first day of school is an event in our lives that most of us remember. It’s a big step for a small child toward leaving babyhood and so “there isn’t enough time to play”.
【小題1】Why did Jane become angry according to the passage?

A．Because she didn’t learn to read on the first day of school.
B．Because there was too much work for her to do at school.
C．Because she had no time to play at school.
D．Because she was not allowed to go to school.
【小題2】The underlined sentence in Paragraph 4 suggests that       .
A．the author was thinking of her school days jokingly
B．the author warned students against the harm of chalk dust
C．the author suffered from an allergy because of chalk dust
D．the author doubted whether her lungs had chalk dust
【小題3】In the opinion of the author, the first day of school is        .
A．a(chǎn) day when a child is the happiest
B．a(chǎn) day when a child does much work
C．the beginning of great learning
D．the end of childhood full of toys

查看答案和解析>>

科目：高中英語 來源：2011屆黑龍江省哈三中高三上學(xué)期12月月考英語卷 題型：閱讀理解

     An allergy (過敏反應(yīng)) is a strong reaction to a substance. Many things can cause allergies. The most common cause is pollen (花粉), which is usually produced by trees in the spring, grasses in the summer and weeds in the fall, as part of their reproductive process.
Other causes include organisms, chemicals, plants and dead skin particles (微粒) from dogs and cats can also cause allergic reactions. So can insect stings and some food.
The most common kind of allergic reactions is itchy (癢的), watery eyes and a blocked or watery nose. Allergies can also cause red, itchy skin. Some reactions can be life-threatening, for example, when breathing passages become blocked.
It is not always easy to avoid allergies. Drugs may offer an effective treatment. Another treatment used in some cases is called immunotherapy (免疫療法). A patient is injected with small amounts of the allergy-causing substance. The idea is that larger and larger amounts are given over time until the patient develops a resistance in his body.
In the United States, experts estimate that up to 8% of young children have food allergies. Every year these allergies cause about 30,000 cases with severe reactions that require immediate treatment. It can result in breathing trouble and in some cases death. It is said that about 100 to 200 people will die. It says most of the reactions are caused by peanuts and tree nuts like walnuts.
People can also be allergic to medicines. The American Academy of Allergy, Asthma and Immunology says about 10% of bad reactions to commonly used medicines are allergic. In other words, a person’s immune system overreacts and produces an allergic reaction. The most common reactions include skin rashes (皮疹), itching, breathing problems and swelling in areas such as the face.
【小題1】 Allergies seldom occur in winter because ______.

A．plants don’t flower in cold weatherB．people usually wear thick clothes
C．pollen is active below freezing pointD．the weather is not too cold for viruses
【小題2】What will happen if one’s breathing passages get blocked?
A．It is nothing serious.B．One’s life is at risk.
C．One has to be sent to hospital.D．One is sure to breathe easily.
【小題3】 According to immunotherapy, the patient is supposed to ______.
A．take some medicines to produce antibodies
B．have immediate operations
C．be given the allergy-causing substance until he develops a resistance
D．be exposed to enough allergy-causing substances
【小題4】The best title would be “________”.
A．The ABCs of AllergiesB．The Cause of Allergies
C．The Treatment of AllergiesD．The Prevention of Allergies

查看答案和解析>>

科目：高中英語 來源：2014屆河北唐山第一中學(xué)高二下期期末考試英語卷（解析版） 題型：閱讀理解

An allergy is a strong reaction to a substance. Many things can cause allergies. The most common cause is pollen (花粉), which is usually produced by trees in the spring, grasses in the summer and weeds in the fall, as part of their reproductive process.

Other causes include organisms, chemicals, plants and dead skin particles from dogs and cats can also cause allergic reactions. So can insect stings and some food.

The most common kind of allergic reactions is itchy (癢的) , watery eyes and a blocked or watery nose. Allergies can also cause red, itchy skin. Some reactions can be life-threatening, for example, when breathing passages become blocked.

It is not always easy to avoid allergies. Drugs may offer an effective treatment. Another treatment used in some cases is called immunotherapy. A patient is injected with small amounts of the allergy-causing substance. The idea is that larger and larger amounts are given over time until the patient develops resistance in his body.

In the United States, experts estimate that up to 8% of young children have food allergies. Every year these allergies cause about 30,000 cases with severe reactions that require immediate treatment. It can result in breathing trouble and in some cases death. It is said that about 100 to 200 people will die. It is said that most of the reactions are caused by peanuts and tree nuts like walnuts.

People can also be allergic to medicines. The American Academy of Allergy, Asthma and Immunology says about 10％ of bad reactions to commonly used medicines are allergic. In other words, a person’s immune system overreacts and produces an allergic reaction. The most common reactions include skin rashes, itching, breathing problems and swelling in areas such as the face.

1.Allergies seldom occur in winter because ________.

A. plants don’t usually flower in cold weather

B. people usually wear thick clothes

C. pollen is active below freezing point

D. the weather is too cold for viruses

2.What will happen if one’s breathing passages get blocked?

A. It is nothing serious.                B. One’s life is at risk.

C. One has to be sent to hospital.                D. One is sure to breathe easily.

3.According to immunotherapy, the patient is supposed to________.

A. take some medicines to produce antibodies

B. have immediate operations

C. be given the allergy-causing substance until the patient develops resistance

D. be exposed to enough allergy-causing substances

4.The best title would be _______.

A. The ABCs of Allergies               B. The Cause of Allergies

C. The Treatment of Allergies          D. The Prevention of Allergies

 

查看答案和解析>>

科目：高中英語 來源：2015屆江蘇省高一第一次階段練習(xí)英語試卷（解析版） 題型：閱讀理解

“How was school, Ben?” I asked my grandson after he began kindergarten(幼兒園) this year. “The work is too long… and there’s not enough time to play,” he replied.

I couldn’t help but remember Ben’s own mother, my daughter, Jane, and her reaction(反應(yīng)) to the first day of school. Julie was also disappointed with the first day of school and so was her little sister. My three-year-old daughter announced angrily after her big sister got on the big yellow school bus, “I want to go ‘sool’ and you not let me!”

When Julie returned home that afternoon, I asked her the same question that I asked Ben, “How was school, Julie?” Julie replied, “I didn’t learn to read today.”

This year as the school bus passed my house, my mind went back to those school days again. I could almost smell the chalk dust in the air. I also wonder what the children these days manage to get chosen to do in order to get out of school for a few moments since there are no erasers to clean. It was fun to be “chosen” for eraser cleaning duty. This was a task finished by going outside and beating erasers together while sneezing and coughing. No wonder so many babies now have allergies(過敏癥), and it’s simply because we all have chalk dust in our lungs!

On the first day of school, the expectation was so great that I would be ready long before it was time to leave for school. We didn’t have backpacks because we had cigar boxes. We carried our small supplies inside a cigar box from one of the local stores. We saved the cigar boxes and used them from year to year until they fell apart.

The first day of school was exciting. It was a new beginning. The doors of knowledge had been opened. The first day of school is an event in our lives that most of us remember. It’s a big step for a small child toward leaving babyhood and so “there isn’t enough time to play”.

1.Why did Jane become angry according to the passage?

A．Because she didn’t learn to read on the first day of school.

B．Because there was too much work for her to do at school.

C．Because she had no time to play at school.

D．Because she was not allowed to go to school.

2.The underlined sentence in Paragraph 4 suggests that       .

A．the author was thinking of her school days jokingly

B．the author warned students against the harm of chalk dust

C．the author suffered from an allergy because of chalk dust

D．the author doubted whether her lungs had chalk dust

3.In the opinion of the author, the first day of school is        .

A．a(chǎn) day when a child is the happiest

B．a(chǎn) day when a child does much work

C．the beginning of great learning

D．the end of childhood full of toys

 

查看答案和解析>>

同步練習(xí)冊答案