Have you been told you have penicillin allergy? Did your parents tell you that you had a reaction as an infant or child, so you should never take it again? Has it been so long since you had a reaction to penicillin that you don’t remember what happened? If you fit any of these descriptions or are just not sure if you have penicillin allergy, there’s good news for you: Chances are, you probably don’t have it.
Between 10 to 20 percent of Americans believe they have a penicillin allergy, but a recent study at Mayo Clinic found that only 10 percent of those people are truly penicillin allergic. In other words, 9 out of 10 people who think they have penicillin allergy are avoiding it for no reason. Even in people with documented allergy to penicillin, only about 20 percent are still allergic 10 years after their initial allergic reaction. It’s not necessarily a permanent condition.
Why is this important? Aren’t there many other antibiotics you can use if you have penicillin allergy? Penicillin has been around since 1928. Penicillin and its related medicines include amoxicillin, methicillin and amoxicillin-clavulnate. These medicines are highly effective treatments for many bacterial infections, such as strep throat and ear infections. Of course, there are alternative antibiotics, but these are often much more expensive and carry a higher risk of side effects. Typically, these alternative antibiotics are broad-spectrum, meaning they fight many types of bacteria, both good and bad. That can lead to development of drug-resistant bacteria, or deadly “superbugs”. This increases the risk for all of us in the future of not having an effective antibiotic to treat our infection.
How do you find out if you have penicillin allergy? Board-certified allergists can test you. First, the allergist will get a history from you about your possible allergy. Typical questions include: How long ago did you have the reaction? What type of reaction occurred, and how soon after you took the penicillin did the reaction appear? The testing is done on the forearm by pricking the skin with a needle. If the results are negative and there is no reaction, penicillin will be injected in the skin. These tests are not painful, and results are available in 15 minutes. A positive reaction may lead to some swelling and itching where the test was placed, which usually goes away within an hour.
In very rare cases, an allergic reaction occurs. This can include hives, swelling, wheezing and/or difficulty breathing. The allergist is trained to treat this rare condition quickly if it happens. If all skin testing is negative, you may be given an oral dose of penicillin in the office. The oral drug challenge is used to verify that you don’t have penicillin allergy. Usually, you’ll be observed in the office for 30 minutes to make sure you have no problems.
If you find out you don’t have a penicillin allergy, notify your physicians that it’s now safe for you to take penicillin. They can take “penicillin allergy” off your chart for good!
1.What can we know about penicillin allergy according to the passage?
A. Most people believe that they are penicillin allergic.
B. People with documented allergy will have it forever.
C. About 90 percent of people are truly penicillin allergic.
D. Many people with initial allergy can avoid it later.
2.Which is NOT the drawback of the alternative antibiotics?
A. They cost much more than penicillin.
B. They can treat many bacterial infections.
C. They can result in drug-resistant bacteria.
D. They also fight good bacteria when used.
3.If you have a positive reaction in skin tests, _______.
A. you can’t leave the office within an hour
B. your skin is supposed to swell and itch
C. it is not safe for you to take penicillin
D. you’ll be given an oral dose of penicillin
4.Which can replace the underlined word “verify”?
A. confirm B. attach
C. declare D. control
高二英语阅读理解中等难度题
Have you been told you have penicillin allergy? Did your parents tell you that you had a reaction as an infant or child, so you should never take it again? Has it been so long since you had a reaction to penicillin that you don’t remember what happened? If you fit any of these descriptions or are just not sure if you have penicillin allergy, there’s good news for you: Chances are, you probably don’t have it.
Between 10 to 20 percent of Americans believe they have a penicillin allergy, but a recent study at Mayo Clinic found that only 10 percent of those people are truly penicillin allergic. In other words, 9 out of 10 people who think they have penicillin allergy are avoiding it for no reason. Even in people with documented allergy to penicillin, only about 20 percent are still allergic 10 years after their initial allergic reaction. It’s not necessarily a permanent condition.
Why is this important? Aren’t there many other antibiotics you can use if you have penicillin allergy? Penicillin has been around since 1928. Penicillin and its related medicines include amoxicillin, methicillin and amoxicillin-clavulnate. These medicines are highly effective treatments for many bacterial infections, such as strep throat and ear infections. Of course, there are alternative antibiotics, but these are often much more expensive and carry a higher risk of side effects. Typically, these alternative antibiotics are broad-spectrum, meaning they fight many types of bacteria, both good and bad. That can lead to development of drug-resistant bacteria, or deadly “superbugs”. This increases the risk for all of us in the future of not having an effective antibiotic to treat our infection.
How do you find out if you have penicillin allergy? Board-certified allergists can test you. First, the allergist will get a history from you about your possible allergy. Typical questions include: How long ago did you have the reaction? What type of reaction occurred, and how soon after you took the penicillin did the reaction appear? The testing is done on the forearm by pricking the skin with a needle. If the results are negative and there is no reaction, penicillin will be injected in the skin. These tests are not painful, and results are available in 15 minutes. A positive reaction may lead to some swelling and itching where the test was placed, which usually goes away within an hour.
In very rare cases, an allergic reaction occurs. This can include hives, swelling, wheezing and/or difficulty breathing. The allergist is trained to treat this rare condition quickly if it happens. If all skin testing is negative, you may be given an oral dose of penicillin in the office. The oral drug challenge is used to verify that you don’t have penicillin allergy. Usually, you’ll be observed in the office for 30 minutes to make sure you have no problems.
If you find out you don’t have a penicillin allergy, notify your physicians that it’s now safe for you to take penicillin. They can take “penicillin allergy” off your chart for good!
1.What can we know about penicillin allergy according to the passage?
A. Most people believe that they are penicillin allergic.
B. People with documented allergy will have it forever.
C. About 90 percent of people are truly penicillin allergic.
D. Many people with initial allergy can avoid it later.
2.Which is NOT the drawback of the alternative antibiotics?
A. They cost much more than penicillin.
B. They can treat many bacterial infections.
C. They can result in drug-resistant bacteria.
D. They also fight good bacteria when used.
3.If you have a positive reaction in skin tests, _______.
A. you can’t leave the office within an hour
B. your skin is supposed to swell and itch
C. it is not safe for you to take penicillin
D. you’ll be given an oral dose of penicillin
4.Which can replace the underlined word “verify”?
A. confirm B. attach
C. declare D. control
高二英语阅读理解中等难度题查看答案及解析
-- Did you get your car from the garage yesterday?
-- Yes, _______, I wouldn’t have driven to the party on time.
A．otherwise B．besides C．however D．therefore
高二英语单项填空中等难度题查看答案及解析
Do let your mother know the truth. She seems to _______ everything.
A．have told B．be told C．have been told D．being told
高二英语单项填空简单题查看答案及解析
If you want to correct your composition, you’d better be more careful ________I have crossed out paragraphs for you.
A. that B. when C. what D. where
高二英语单项填空简单题查看答案及解析
—How did he get my telephone number?
—You ________ it . You told him last week．
A．should have forgotten B．may have forgotten
C．must have forgotten D．could have forgotten
高二英语单项填空中等难度题查看答案及解析
When It’s Time to Give Up I’m sure you have been told that in order to become successful, you must persevere (坚持), fight, stand up whenever you fall, and march forward until the end. I say those things to people all the time, so why am I telling you now that sometimes it is actually better to quit? The reason is that in certain cases, you could only go forward if you go back.
Sometimes you will be putting a lot of time and effort in achieving a goal to find out one day that your strategy is totally wrong. You could be achieving the same results in half the time had you been focusing on doing the more important things.
Let’s say your goal was to lose weight. You then set a goal to do 1000 sit-ups a day. After about 1 month of doing this, you realize that you have been disciplined enough to hit your goal of 1000 sit-ups a day, however, you aren’t getting any closer to your main goal of losing weight. This is called focusing on a secondary goal, which sometimes is the wrong strategy.
We sometimes get so focused on a secondary goal that we lose focus on the primary goal. I see this with sales people all the time. Their main goal is to make money but they often find their focus on hitting some new position within the sales department and when that doesn’t happen, they feel like a big failure. The goal never was to hit some position; the goal was to make money whether with this company or another company.
Would it make sense, in this case, for a sales person to quit the job if his goal of making a certain amount of money just wasn’t happening? His managers would probably call him a quitter, but his goal is to make money. If he can obtain that goal through a different source, then quitting would actually be the smart thing to do.
So when is it time to give up? When what you are doing no longer makes sense in respects to achieving your main goal. Sometimes it will make more sense to give up what you are doing and start on a different path towards the same goal.
Some people will spend their entire lives on a path to a certain goal only to find out in the end that the path they took was the wrong one. There is no shame in giving up on a path you are taking to your goal as long as you always aim to reach your goal. There’s no point in staying on a path that will lead you to nowhere.
1.Why does the author advocate giving up?
A. Because giving up halfway will save half the time.
B. Because perseverance does not work in most cases.
C. Because sometimes people adopt wrong strategies.
D. Because no one can achieve success without hard work.
2.Which of the following is a secondary goal in the case of sales people?
A. To gain recognition from their boss.
B. To make money in the present company.
C. To work for other better companies.
D. To get promoted in the sales department.
3.What is the author’s attitude towards giving up?
A. One should devote his whole life to one goal rather than give up.
B. One should not regret giving up if he finds he is on a wrong path.
C. One always needs to stick to the same strategy to achieve his goal.
D. One should focus on primary and secondary goals before he quits.
高二英语阅读理解中等难度题查看答案及解析
THE WAY TO READ FAST
Perhaps you have been told about some habits（习惯） which stop a person reading fast and have been strongly asked to break those habits which you might have.
Do you still have any of these bad habits7 Check yourself by answering "yes" or "no" to these questions:
1. Do you move your lips(嘴唇) when reading silently？
2. Do you point to words with your finger as you read?
3. Do you move your head from side to side as you read?
4. Do you read one word at a time?
If you answer "yes" to any of these questions, start at once to break the habit.
If you move your lips, hold your fingers over them, or hold a piece of paper between your lips while you are reading. Then if your lips move, you will know it and can stop them.
If you point to words, hold the two sides of your book, one side with your left hand, the other side with your right hand. Then you will not have a free finger to use in pointing while reading. If you move your head, place your chin（下巴）in one hand, and hold your head still(不动地).
If you read no more than one or two or three words at a time, you need to work very hard in learning to take in more words at each glance(看一眼) as your eyes travel across the lines of words.
1.You may hold your fingers over your lips while reading
A. to hold a piece of paper between them B. to feel whether y our lips move or not
C. to tell others to be silent D. to stop yourself talking to others
2.When your eyes travel across the lines of words,
A. you need to read the words out B. you need to look at every word carefully
C. you need to remember every word D. you need to read several words at a time
3.When you read,
A. don’t use your finger to point to words B. don’t hold your books with your hands
C. don’t hold your head still D. don’t do any of the things mentioned(提到)above.
4.This passage mainly talks about .
A. the importance of fast reading B. the bad habits in reading
C. the way to read fast D. both A and B
高二英语阅读理解中等难度题查看答案及解析
If only you __________ him what I said! Everything would have been all right.
A. didn't told B. hadn't told
C. would not tell D. would have not told
高二英语单项填空中等难度题查看答案及解析
--Were you in time for the meeting?
-- If I _________earlier, I would have .
A．was told B．had been told C．were to be told D．should be told
高二英语单项填空中等难度题查看答案及解析
--- Now where was I ?
--- You ______ me about your travels in Canada.
A．told B．were telling
C．have told D．will tell
高二英语单项填空中等难度题查看答案及解析