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VII. Read the following passage and mark the letter A, R, C, or D on your answer sheet to indicate the correct answer to each of the questions
People have been donating blood since the early twentieth century to help accident victims and patients undergoing surgical procedures. Usually a pint of whole blood is donated, and it is then divided into platelets, white blood cells, and red blood cells. People can donate blood (for red blood cells) about once every two months.
Transfusing the blood from the donor to the recipient is straightforward. It involves taking the blood from a donor’s arm vein by means of a hypodermic syringe. The blood flows down from the container by gravity. This is a slow process and may last as long as 2 hours to complete the infusion of blood into the recipient. The patient is protected from being infected during the transfusion. Only sterile containers, tubing, and needles are used, and this helps ensure that transfused or stored blood is not exposed to disease causing bacteria.
Negative reactions to transfusions are not unusual. The recipient may suffer an allergic reaction or be sensitive to donor leukocytes. Some may suffer from an undetected red cell incompatibility.
Unexplained reactions are also fairly common. Although they are rare, other causes of such negative reactions include contaminated blood, air bubbles in the blood, overloading of the circulatory system through administration of excess blood, or sensitivity to donor plasma or platelets.
Today, hospitals and blood banks go to great lengths to screen all blood donors and their blood. All donated blood is routinely and rigorously tested for diseases, such as HIV, hepatitis B, and syphilis. When the recipient is a newborn or an infant, the blood is usually irradiated to eliminate harmful elements. Donated blood is washed, and the white blood cells and platelets removed.
Storing the blood sometimes requires a freezing process. To freeze the red blood cells, a glycerol solution is added. To unfreeze the, the glycerol is removed. The ability to store blood for long periods has been a boon to human health.
Câu hỏi:The word "it" refers to___________.
- A. surgical procedures
- B. accident victims
- C. a pint of whole blood
- D. surgery patients
Lời giải tham khảo:
Đáp án đúng: C
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CÂU HỎI KHÁC
- To all intents and_________, we are already confronting the challenges of the future.
- What happened to the plane?” It had hardly touched down__________it burst into flames.”
- Isn’t your class picnic today?” No, our plans for the picnic________”
- Although thunder and lightning are produced at the same time, light waves travel faster________, so we see the lightning before we hear the thunder.
- On checking them out, I found that I was mentioned in the article, which did me no_______at all.
- Such investments are beyond the________of a small farmers family.
- _____ was expected, these discussions raised temperatures in the chapter hall.
- Your products________an advantage through color and brilliance, for example, for automotive coatings and many other applications.
- I’d rather you __________say anything to John about his conversation.
- She was also__________from school, after teachers said she would be a ‘bad influence’on the other girls.
- Seeing the children playing hide and seek in the school yard,_________.
- Its_________that you would send your child out to cross the street without first giving a lesson in safe crossing.
- What qualities do you have that make you a suitable candidate for this post?”________”
- Hi, Mark. Long time no see. What’s going on?
- The city made major improvements in the old waterfront area. As a result, it is a great attraction today.
- We cannot create a rule-based ASEAN. We don’t have means of drafting, interpreting and enforcing rules.
- It will take some time before the impact of the new legislation is brought home to the person in the street.
- I don’t mind whether we go to the seaside or not this year.
- The weather was so dismal that they had to cancel the picnic immediately.
- The word 'it' refers to...
- According to the passage, how often can people donate blood for red blood cells?
- All of the following are mentioned as potential negative reactions to transfusion EXCEPT__________.
- What answer choice is closest in meaning to the word undetected”?
- What can the phrase 'go to the length' best replaced by
- Based on the information in the passage, what can be inferred about blood transfused to infants and newborns?
- What does the author imply in the passage?
- You must drive it home to him that spending too much time playing computer games will do him no good.
- The company paid its workers undeservedly, which made them let down.
- People sometimes choose partners who compensate for their own shortcomings.
- Mr. Lane urged any parents who have concerns about the disease to seek medical help at once.
- Endemic diseases are diseases that habitual infect only those persons living within certain geographical limits.
- There are only ten children in the class at the moment but it could be twice that after Christmas.
- When I got to the cinema Jack had been waiting for me.
- What is NOT mentioned as a factor contributing to lifelong skills for athletes?
- According to the passage what is NOT increased by playing sports?
- According to the passage, sport players benefit from___________.
- Which of the followings is NOT mentioned as a benefit for teenagers playing sport in comparison with those who do not?
- What does the word gated” in the third paragraph mean?
- Which of the followings is NOT prevented as a result of playing sports?
- Whose study suggests that sport players are more able to feel better after unpleasant events than others?
- What's the best title for the passage?
