Whether enough blood is donated could be a(an...

Whether enough blood is donated could be a(an) ________ of life and death for the accident victims.

高二英语单项填空中等难度题查看答案及解析

All efforts of cloning an animal will be ________ if there is not enough diversity in the group to overcome illness.

高二英语单项填空中等难度题查看答案及解析

请阅读短文，并根据所读内容在文章后表格中的空格里填入一个最恰当的单词。

注意：每个空格只填一个单词。

Blood donation, also called blood banking, is a wonderful thing to do. It is an easy and direct way of contributing to social work and having a big effect on the community. It helps to save lives and helps those who are in need of blood due to bad condition or the heavy loss of blood during operations or in accidents.

You are able to give or donate blood every three or four month, and it is such a beautiful way of making a huge difference to someone’s life and you can always be proud of it after making a valuable contribution to society. Blood donation is not a big problem, but you need to keep a few points in mind.

Before donating blood, make sure that the ferrum（铁）level in you body is high enough and for that you should take a healthy diet. Do not go for blood donation on an empty stomach. You should follow the correct process so that everything goes well. After having a balanced diet you will feel strong and comfortable to donate blood. Afterwards, you will not feel faint or weak.

For required hemoglobin（血红蛋白）in your body, drink lots of juice and other drinks. Fruit juice, such as apple juice is very good for increasing the blood level in your body.

For a good blood flow in your body, drink at least 6-7 glasses of water every day. Completely avoid, a day before and after giving blood, taking alcohol, caffeine, etc. Do not smoke half an hour before giving blood.

When you are going for blood donation, be relaxed, which helps keep the right blood pressure. During the blood donation activity take a deep breath and try to calm yourself. Don’t take part in some other activities.

When you donate blood, you are making the effort to save someone’s life. Blood donation is a very simple and fast process, but you need to take care of yourself after donating blood. Proper care helps to reduce side effects. The following are a few tips that will help you out.

Take a rest for 15 minutes after completion of the donation. It helps you to feel relaxed and energetic.

Eat something and drink juice before leaving the blood donation center. Make sure that you have meals after donating blood. Smoking should be avoided for one hour after the process. Avoid some activities right away, for example, driving.

Finally, be proud of yourself because you have done a great thing in helping to save someone’s life. Blood donation is a very important activity.

高二英语其他题中等难度题查看答案及解析

Good news came that Nancy decided to donate blood to Dan Hens, and the results of the medical tests came in: She was a__________.

A．suit     B．fit         C．match   D．mate

高二英语单项填空中等难度题查看答案及解析

When we donate blood, a small amount is usually taken in advance for at least ABO and Ph systems typing. If you are O+, the O is your ABO type and the + is your Rh type. It is possible to be A, B, AB, or O as well as Rh + or Rh-.

The ABO system was discovered by Karl Landsteiner in the early 1900s. He was awarded the Nobel Prize for his achievements. There are four basic types of blood in the ABO system: A, B, AB and O. Everybody is born with one of these four types of blood. We get blood type, just like hair color and height from parents. Because of the substances(物质) contained in each type, the four groups must be transfused carefully, If two different blood types are mixed together, it may put a person into an extremely dangerous situation. Basically, A and B cannot be mixed. A and B cannot receive AB, but AB may receive A or B. In an emergency, type O blood can be given because it is most likely to be accepted by all blood types, so it is often called the universal donor. However, there is still a risk. For the opposite reason, AB is sometimes called the universal receiver. However, because there can be so many reactions in the blood bank of the hospital.

There is a relationship between your blood type and your nationality. Among the Europeans, about 45 percent have type O while 42 percent have type A. The rarest is type AB. Other races have different percentage. For example, some American Indian groups have nearly 100 percent type O out of 100 donors in the world…

1. Which of the following shown the correct relationships in blood transfusions?

  A B  A         B    A       B      A      B

 AB O   AB     O      AB     O     AB      O

A             B            C               D

2. The underlined word “transfuse” most probably means ________.

A. to put the blood into a container

B. to move the blood from one place to another 

C. to put the blood of one person into the body of another

D. to give power to another person

3. The writer suggests that the third most common blood type among the Europeans is ______.

A. B           B. A            C. AB          D. O

4 The text mainly tells us ______.

A. about the basic types of human blood

B. what kind of blood is the most common

C. about Karl Landsteiner who won the Nobel Prize

D. the relationship between blood type and nationality

高二英语阅读理解简单题查看答案及解析

He is now a regular donor who was inspired as a small child, _____ his mother when she donated blood.

A.accompanying B.accompanied C.to accompany D.to be accompanied

高二英语单项填空中等难度题查看答案及解析

It is difficult for doctors to help a person with a damaged brain. Without enough blood, the brain lives for only three to five minutes. More often the doctors can’t fix the damage. Sometimes they are afraid to try something to help because it is dangerous to work on the brain. The doctors might make the person worse if he operates on the brain.

Dr. Robert White, a famous professor and doctor, thinks he knows a way to help. He thinks doctors should make the brain very cold. If it is very cold, the brain can live without blood for 30 minutes. This gives the doctor a longer time to do something for the brain.

Dr. White tried his idea on 13 monkeys. First he taught them to do different jobs, and then he op­erated on them. He made the monkeys' blood go through a machine. The machine cooled the blood. Then the machine sent the blood back to the monkeys' brains. When the brain’s tempera­ture was 10°C, Dr. White stopped the blood to the brain. After 30 minutes he turned the blood back on. He warmed the blood again. After their operations the monkeys were like they had been before. They were healthy and busy. Each one could still do the jobs the doctor had taught them.

1. The biggest difficulty in operating on the damaged brain is that _______.

A. the time is too short for doctors

B. the patients are often too nervous

C. the damage is extremely hard to fix

D. the blood-cooling machine might break down

2.The brain operation was made possible mainly by _______.

A. taking the blood out of the brain

B. trying the operation on monkeys first

C. having the blood go through a machine

D. lowering the brain’s temperature

3.With Dr. White’s new idea, the operation on the damaged brain _______.

A. can last as long as 30 minutes

B. can keep the brain’s blood warm

C. can keep the patient’s brain healthy

D. can help monkeys do different jobs

4. What is the right order of the steps in the operation?

a. send the cooled blood back to the brain

b. stop the blood to the brain

c. have the blood cooled down

d. operate on the brain

A. a, b, c, d　　　　　　 B. c, a, b, d

C. c, b, d, a　　　　　　 D. b, c, d, a

高二英语阅读理解中等难度题查看答案及解析

It is difficult for doctors to help a person with a damaged brain.　 Without enough blood, the brain lives for only three to five minutes.　 More often the doctors can’t fix the damage.　 Sometimes they are afraid to try something to help because it is dangerous to work on the brain. The doctors might make the person worse if he operates on the brain.

Dr. Robert White, a famous professor and doctor, thinks he knows a way to help. He thinks doctors should make the brain very cold. If it is very cold, the brain can live without blood for 30 minutes. This gives the doctor a longer time to do something for the brain.

Dr. White tried his idea on 13 monkeys. First he taught them to do different jobs, and then he op­erated on them. He made the monkeys' blood go through a machine. The machine cooled the blood. Then the machine sent the blood back to the monkeys' brains. When the brain’s tempera­ture was 10°C, Dr. White stopped the blood to the brain. After 30 minutes he turned the blood back on. He warmed the blood again. After their operations the monkeys were like they had been before.　 They were healthy and busy. Each one could still do the jobs the doctor had taught them.

1.The biggest difficulty in operating on the damaged brain is that _______.

A. the time is too short for doctors

B. the patients are often too nervous

C. the damage is extremely hard to fix

D. The blood cooling machine might break down

2.The brain operation was made possible mainly by _______.

A. taking the blood out of the brain

B. trying the operation on monkeys first

C. having the blood go through a machine

D. lowering the brain’s temperature

3.With Dr. White’s new idea, the operation on the damaged brain ______.

A. can last as long as 30 minutes

B. can keep the brain’s blood warm

C. can keep the patient’s brain healthy

D. can help monkeys do different jobs

高二英语阅读理解中等难度题查看答案及解析

It is difficult for doctors to help a person with a damaged brain. Without enough blood, the brain lives for only three to five minutes. More often the doctors can’t fix the damage. Sometimes they are afraid to try something to help because it is dangerous to work on the brain. The doctors might make the person worse if he operates on the brain.

Dr. Robert White, a famous professor and doctor, thinks he knows a way to help. He thinks doctors should make the brain very cold. If it is very cold, the brain can live without blood for 30 minutes. This gives the doctor a longer time to do something for the brain.

Dr. White tried his idea on 13 monkeys. First he taught them to do different jobs, then he operated on them. He made the monkeys’ blood back to the monkeys’ brains. When the brain’s temperature was 10℃, Dr. White stopped the blood to the brain. After 30 minutes he turned the blood back on. He warmed the blood again. After their operations the monkeys were like they had been before. They were healthy and busy. Each one could still do the jobs the doctor had taught them.

1..The biggest difficulty in operating on the damaged brain is that ____.

A. the time is too short for doctors

B. the patients are often too nervous

C. the damage is extremely hard to fix

D. the blood-cooling machine might break down

2..The brain operation was made possible mainly by ____.

A. taking the blood out of the brain

B. trying the operation on monkeys first

C. having the blood go through a machine

D. lowering the brain’s temperature

3..With Dr. White’s new idea, the operation on the damaged brain ____.

A. can last as long as 30 minutes

B. can keep the brain’s blood warm

C. can keep the patient’s brain healthy

D. can help monkeys do different jobs

4.. What is the right order of the steps in the operations?

a. send the cooled back to the brain      b. stop the blood to the brain

c. have the blood cooled down          d. operate on the brain

A. a, b, c, d       B. c, a, b, d       C. c, b, d, a       D. b, c, d, a

高二英语阅读理解简单题查看答案及解析

It is difficult for doctors to help a person with a damaged brain. Without enough blood, the brain lives for only three to five minutes. More often the doctors can’t fix the damage. Sometimes they are afraid to try something to help because it is dangerous to work on the brain. The doctors might make the person worse if he operates on the brain.

Dr. Robert White, a famous professor and doctor, thinks he knows a way to help. He thinks doctors should make the brain very cold. If it is very cold, the brain can live without blood for 30 minutes. This gives the doctor a longer time to do something for the brain.

Dr. White tried his idea on 13 monkeys. First he taught them to do different jobs, then he operated on them. He made the monkeys’ blood back to the monkeys’ brains. When the brain’s temperature was 10℃, Dr. White stopped the blood to the brain. After 30 minutes he turned the blood back on. He warmed the blood again. After their operations the monkeys were like they had been before. They were healthy and busy. Each one could still do the jobs the doctor had taught them.

1. The biggest difficulty in operating on the damaged brain is that ________.

A. the time is too short for doctors                          B. the patients are often too nervous

C. the damage is extremely hard to fix                        D. the blood-cooling machine might break down

2.The brain operation was made possible mainly by ________.

A. taking the blood out of the brain  B. trying the operation on monkeys first

C. having the blood go through a machine                  D. lowering the brain’s temperature

3. With Dr. White’s new idea, the operation on the damaged brain ________.

A. can last as long as 30 minutes     B. can keep the brain’s blood warm

C. can keep the patient’s brain healthy                  D. can help monkeys do different jobs

4. What is the right order of the steps in the operations?

a. send the cooled back to the brain  b. stop the blood to the brain

c. have the blood cooled down         d. operate on the brain

A. a, b, c, d     B. c, a, b, d       C. c, b, d, a       D. b, c, d, a

5.Which of the following is not true?

A. If there isn’t enough blood, the brain can live for only three to five minutes.

B. If the brain is very cold, it can live without blood for half an hour.

C. Dr. White tried his idea for thirteen times.

D. After their operations, the monkeys were healthy and busy again.

高二英语阅读理解中等难度题查看答案及解析