题目内容
He was about to make a call to Tom _____ Tom patted me on the shoulder.
| A．as | B．until | C．while | D．when |
D
解析试题分析：考查连词，A. as当…时候B. until直到…C. while当…时候D. when当…时候，句子意思“当汤姆拍我的肩膀的时候他将要给汤姆打电话”，所以选D，when所引导的从句，其谓语动词即可是持续动词，也可是短暂动词；谓语动词动作发生的时间可以与主句谓语动词的动作是同时、或之前、之后；while句中的谓语动词是持续动词，不用短暂动词，位于动作发生的时间通常与主句谓语动词动作发生时间是同时；as侧重指从句的动作与主句的动作同时进行，谓语动词可以是持续性动词，也可以是短暂性动词
考点：考查连词
点评：连词是高考常考内容，本题不同的词意思相同，但是它们有区别，要求考生掌握它们的区别
即学即练：We need some more facts and figures __________ we take the final decision.
A. since B. before C. after D. until
选B
53随堂测系列答案
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…
| 84 donors are Rh+ | 16 donors are Rh- |
| 38 are O+ | 7 are O- |
| 34 are A+ | 6 are A- |
| 9 are B+ | 2 are B- |
| 3 are AB+ | 1 is AB- |
A B A B A B A B
AB O AB O AB O AB OA 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 K^S*5U.C#O
C. to put
the blood of one person into the body of anotherD. 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
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…
|
84 donors are Rh+ |
16 donors are Rh- |
|
38 are O+ |
7 are O- |
|
34 are A+ |
6 are A- |
|
9 are B+ |
2 are B- |
|
3 are AB+ |
1 is AB- |
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 K^S*5U.C#O
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
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…
| 84 donors are Rh+ | 16 donors are Rh- |
| 38 are O+ | 7 are O- |
| 34 are A+ | 6 are A- |
| 9 are B+ | 2 are B- |
| 3 are AB+ | 1 is AB- |
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 O
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
When we donate（捐献）blood, a small amount is usually taken in advance for at least ABO and Rh 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 transfusions，patients usually receive only salt until their blood can be matched as exactly as possible 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 out of 100 donors in the world…
|
84 donors are Rh+ |
16 donors are Rh- |
|
38 are O+ |
7 are O- |
|
34 are A+ |
6 are A- |
|
9 are B+ |
2 are B- |
|
3 are AB+ |
1 is AB- |
1.Which of the following shown the correct relationships in blood transfusions?
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
When we donate（捐献）blood, a small amount is usually taken in advance for at least ABO and Rh 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 transfusions，patients usually receive only salt until their blood can be matched as exactly as possible 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 out of 100 donors in the world…
| 84 donors are Rh+ | 16 donors are Rh- |
| 38 are O+ | 7 are O- |
| 34 are A+ | 6 are A- |
| 9 are B+ | 2 are B- |
| 3 are AB+ | 1 is AB- |
1．Which of the following shown the correct relationships in blood transfusions?
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