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Everyone has traits (特性) that make us who we are. We have physical traits, like red hair, long legs and funny-looking toes. We also have character traits including humour, warmth, creativity and so on.
Certain physical traits are fully inherited (遗传), such as blue eyes and curly hair (卷发). About 25,000 to 35,000 genes are in a single cell in the human body. These genes carry the traits that are passed down genetically from parents to their children.
Many traits exist between inheritance and development—the interaction with environment. One example is body shape. It tends to be passed down from parents. But once diet becomes a factor, environment begins to play an important role in how the body develops. Body shape is a trait that is a mixture of inheritance from parents and influence of environment.
So lots of our most important traits have been learnt, rather than inherited. For example, if you're really great at table tennis, it's not because your parents have passed down the skills in genes. It's because you have practised a lot and developed the skills yourself. If you have kids who turn out to be great at table tennis, it is because they put in
the hours, learnt the skills, and memorized the moves that are necessary to play it well.
Of course, some of us have brains that are more advantageous (有优势的) to table tennis. Say you were born with a large and powerful part of the brain that controls your hand-eye coordination (协调). That is inherited. What you do with it and how you choose to develop that advantage are up to you.
A person may love football very much. That will not turn into genetic material to be passed down to the next generation. However, if his children grow up in an environment with role models who are crazy about playing football or watching football games, they are more likely to be football fans!
( ) 37. What is a physical trait that is fully inherited according to the passage?
A. The eye colour.
B. The special diet.
C. The body shape.
D. The body weight.
( ) 38. The underlined word "factor" in Paragraph 3 probably means "______".
A. problem
B. cause
C. task
D. purpose
( ) 39. According to the passage, the writer believes that ______.
A. character traits can hardly change during the lifetime
B. the skills of table tennis playing are passed down to kids
C. a kid's hand-eye coordination isn't related to inheritance
D. environment plays an important role in traits development
( ) 40. Which of the following can be the best title for the passage?
A. Why are traits important?
B. How does inheritance influence traits?
C. Where do traits come from?
D. What are physical and character traits?
Certain physical traits are fully inherited (遗传), such as blue eyes and curly hair (卷发). About 25,000 to 35,000 genes are in a single cell in the human body. These genes carry the traits that are passed down genetically from parents to their children.
Many traits exist between inheritance and development—the interaction with environment. One example is body shape. It tends to be passed down from parents. But once diet becomes a factor, environment begins to play an important role in how the body develops. Body shape is a trait that is a mixture of inheritance from parents and influence of environment.
So lots of our most important traits have been learnt, rather than inherited. For example, if you're really great at table tennis, it's not because your parents have passed down the skills in genes. It's because you have practised a lot and developed the skills yourself. If you have kids who turn out to be great at table tennis, it is because they put in
the hours, learnt the skills, and memorized the moves that are necessary to play it well.
Of course, some of us have brains that are more advantageous (有优势的) to table tennis. Say you were born with a large and powerful part of the brain that controls your hand-eye coordination (协调). That is inherited. What you do with it and how you choose to develop that advantage are up to you.
A person may love football very much. That will not turn into genetic material to be passed down to the next generation. However, if his children grow up in an environment with role models who are crazy about playing football or watching football games, they are more likely to be football fans!
( ) 37. What is a physical trait that is fully inherited according to the passage?
A. The eye colour.
B. The special diet.
C. The body shape.
D. The body weight.
( ) 38. The underlined word "factor" in Paragraph 3 probably means "______".
A. problem
B. cause
C. task
D. purpose
( ) 39. According to the passage, the writer believes that ______.
A. character traits can hardly change during the lifetime
B. the skills of table tennis playing are passed down to kids
C. a kid's hand-eye coordination isn't related to inheritance
D. environment plays an important role in traits development
( ) 40. Which of the following can be the best title for the passage?
A. Why are traits important?
B. How does inheritance influence traits?
C. Where do traits come from?
D. What are physical and character traits?
答案
A
; B
; D
; C
; B
; D
; C
