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26. 舞蹈物理动作分析 1994年02月 D9402
Analyzing the physics of dance can add fundamentally to a dancers skill. Although dancers seldom see themselves totally in physical terms as body mass moving through space under the influence of well-known forces and obeying physical lawsneither can they afford to ignore the physics of movement. For example, no matter how much a dancer wishes to leap off the floor and then start turning, the law of conservation of angular momentum absolutely prevents such a movement.
Some movements involving primarily vertical or horizontal motions of the body as a whole, in which rotations can be ignored, can be studied using simple equations of linear motion in three dimensions . However, rotational motions require more complex approaches that involve analyses of the way the bodys mass is distributed, the axes of rotation involved in different types of movement, and the sources of the forces that produce the rotational movement.
26.1 The primary purpose of the passage is to
initiate a debate over two approaches to analyzing a field of study
describe how one field of knowledge can be applied to another field
point out the contradictions between two distinct theories
define and elaborate on an accepted scientific principle
discuss the application of a new theory within a new setting
26.2. The author mentions all of the following as contributing to an understanding of the physics of dance EXCEPT:
the law of conservation of angular momentum
analyses of the way in which the bodys mass is distributed
equations of linear motion in three dimensions
analyses of the sources that produce rotational motions
the technical terms for movements such as leaps and turns
26.3.The author implies that dancers can become more skilled by doing which of the following?
Ignoring rotational movements
Understanding the forces that permit various movements
Solving simple linear equations
Learning the technical terms utilized by choreographers
Circumventing the law of conservation of angular momentum
26.4.Analysis of which of the following would require the kind of complex approach described in the last sentence?
A long leap across space
A short jump upward with a return to the same place
A sustained and controlled turn in place
Short, rapid steps forward and then backward without turning
Quick side steps in a diagonal line
答案：BEBC
26. 舞蹈物理动作分析 1994年02月 D9402
Analyzing the physics of dance can add fundamentally to a dancers skill. Although dancers seldom see themselves totally in physical terms as body mass moving through space under the influence of well-known forces and obeying physical lawsneither can they afford to ignore the physics of movement. For example, no matter how much a dancer wishes to leap off the floor and then start turning, the law of conservation of angular momentum absolutely prevents such a movement.
Some movements involving primarily vertical or horizontal motions of the body as a whole, in which rotations can be ignored, can be studied using simple equations of linear motion in three dimensions . However, rotational motions require more complex approaches that involve analyses of the way the bodys mass is distributed, the axes of rotation involved in different types of movement, and the sources of the forces that produce the rotational movement.
26.1 The primary purpose of the passage is to
initiate a debate over two approaches to analyzing a field of study
describe how one field of knowledge can be applied to another field
point out the contradictions between two distinct theories
define and elaborate on an accepted scientific principle
discuss the application of a new theory within a new setting
26.2. The author mentions all of the following as contributing to an understanding of the physics of dance EXCEPT:
the law of conservation of angular momentum
analyses of the way in which the bodys mass is distributed
equations of linear motion in three dimensions
analyses of the sources that produce rotational motions
the technical terms for movements such as leaps and turns
26.3.The author implies that dancers can become more skilled by doing which of the following?
Ignoring rotational movements
Understanding the forces that permit various movements
Solving simple linear equations
Learning the technical terms utilized by choreographers
Circumventing the law of conservation of angular momentum
26.4.Analysis of which of the following would require the kind of complex approach described in the last sentence?
A long leap across space
A short jump upward with a return to the same place
A sustained and controlled turn in place
Short, rapid steps forward and then backward without turning
Quick side steps in a diagonal line
答案：BEBC
