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Humans have four blood types（血型）. They are blood type A, B, O and AB.
The table below shows all kinds of possible blood types of parents and their children. Children’s blood types are shown in grey squares.
| MOTHER FATHER | A | B | O | AB |
| A | A, O | A, B, O, AB | A, O | A, B, AB |
| B | A, B, O, AB | B, O | B, O | A, B, AB |
| O | A, O | B, O | O | A, B |
| AB | A, B, AB | A, B, AB | A, B | A, B, AB |
( ) 56. If both parents are blood type O, then their children must be ________.
A. blood type A B. blood type B
C. blood type AB D. blood type O
( ) 57. If a father is blood type A and a mother is blood type B, then their children’s blood types may be __________.
A. any blood type B. blood type A and B
C. blood type AB and O D. blood type A, B and AB
( ) 58. If both parents are blood type AB, then their children can NOT be ____.
A. blood type A B. blood type AB
C. blood type O D. blood type B
( )59. If both children of the same parents are blood type A, B, O and AB, then their parents should be __________.
A. blood type A and B B. blood type A and AB
C. blood type B and AB D. blood type AB and AB
( ) 60. If one parent is blood type AB, and his or her nine children only get blood type A and B, then the other parent’ s blood type is likely to be（可能）__________.
A. blood type A B. blood type B C. blood type AB D. blood type O
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阅读理解
  | A | B | O | AB |
| A | A,O | A,B,O,AB | A,O | A,B,AB |
| B | A,B,O,AB | B,O | B,O | A,B,AB |
| O | A,O | B,O | O | A,B |
| AB | A,B,AB | A,B,AB | A,B | A,B,AB |
【小题1】If both parents are blood type O, then their children must be _________.
| A．blood type A | B．blood type B | C．blood type AB | D．blood type O |
| A．any blood type | B．blood type A and B |
| C．blood type AB and O | D．blood type A,B and AB |
| A．blood type A | B．blood type AB | C．blood type O | D．blood type B |
| A．blood type A and B | B．blood type A and AB |
| C．blood type B and AB | D．blood type AB and AB |
| A．blood type A | B．blood type B | C．blood type AB | D．blood type O |
  | A | B | O | AB |
| A | A,O | A,B,O,AB | A,O | A,B,AB |
| B | A,B,O,AB | B,O | B,O | A,B,AB |
| O | A,O | B,O | O | A,B |
| AB | A,B,AB | A,B,AB | A,B | A,B,AB |
小题1:If both parents are blood type O, then their children must be _________.
| A．blood type A | B．blood type B | C．blood type AB | D．blood type O |
| A．any blood type | B．blood type A and B |
| C．blood type AB and O | D．blood type A,B and AB |
| A．blood type A | B．blood type AB | C．blood type O | D．blood type B |
| A．blood type A and B | B．blood type A and AB |
| C．blood type B and AB | D．blood type AB and AB |
| A．blood type A | B．blood type B | C．blood type AB | D．blood type O |
阅读理解
|
|
A |
B |
O |
AB |
|
A |
A,O |
A,B,O,AB |
A,O |
A,B,AB |
|
B |
A,B,O,AB |
B,O |
B,O |
A,B,AB |
|
O |
A,O |
B,O |
O |
A,B |
|
AB |
A,B,AB |
A,B,AB |
A,B |
A,B,AB |
1.If both parents are blood type O, then their children must be _________.
A. blood type A B. blood type B C. blood type AB D. blood type O
2. If a father is blood type A and a mother is blood type B, then children’s blood types may be ________.
A. any blood type B. blood type A and B
C. blood type AB and O D. blood type A,B and AB
3.If both parents are blood type AB, then their children can NOT be ________.
A. blood type A B. blood type AB C. blood type O D. blood type B
4. If four children of the same parents are blood type A , B, O and AB, then their parents should be ________.
A. blood type A and B B. blood type A and AB
C. blood type B and AB D. blood type AB and AB
5. If one parent is blood type AB, and his or her nine children only get blood type A and B, then the other parent’s blood type is likely to be __________.
A. blood type A B. blood type B C. blood type AB D. blood type O
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