He was about to make a call to Tom _____ Tom patted me on the shoulder.


  1. A.
    as
  2. B.
    until
  3. C.
    while
  4. D.
    when
D
試題分析：考查連詞，A. as當…時候B. until直到…C. while當…時候D. when當…時候，句子意思“當湯姆拍我的肩膀的時候他將要給湯姆打電話”，所以選D，when所引導的從句，其謂語動詞即可是持續(xù)動詞，也可是短暫動詞；謂語動詞動作發(fā)生的時間可以與主句謂語動詞的動作是同時、或之前、之后；while句中的謂語動詞是持續(xù)動詞，不用短暫動詞，位于動作發(fā)生的時間通常與主句謂語動詞動作發(fā)生時間是同時；as側重指從句的動作與主句的動作同時進行，謂語動詞可以是持續(xù)性動詞，也可以是短暫性動詞
考點：考查連詞
點評：連詞是高考�？純热�，本題不同的詞意思相同，但是它們有區(qū)別，要求考生掌握它們的區(qū)別
即學即練：We need some more facts and figures __________ we take the final decision.
A. since           B. before            C. after            D. until
選B
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科目：高中英語 來源：福建省泉州一中2009-2010學年高二下學期期中考試英語試題 題型：閱讀理解


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-.
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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-
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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
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D. to give power to another person
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A. B           B. A            C. AB          D. O
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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(物質) 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+

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

 

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

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  B. to move the blood from one place to another  K^S*5U.C#O

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  D. to give power to another person

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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

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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…

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  A B  A         B    A       B      A      B

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  B. to move the blood from one place to another  O

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  D. to give power to another person

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

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  B. what kind of blood is the most common

  C. about Karl Landsteiner who won the Nobel Prize

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When we donate（捐獻）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-．

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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

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

4.The text mainly tells us ___________．

       A．a(chǎn)bout the basic types of human blood

       B．what kind of blood is the most common

       C．a(chǎn)bout Karl Landsteiner who won the Nobel Prize

       D．the relationship between blood type and nationality

 

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When we donate（捐獻）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 （物質） 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 _________.

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4．The text mainly tells us ___________.

A．a(chǎn)bout the basic types of human blood

B．what kind of blood is the most common

C．a(chǎn)bout Karl Landsteiner who won the Nobel Prize

D．the relationship between blood type and nationality

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