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find the directions in which the functions increase and decrease most rapidly at P, Then find the derivatives of the functions in this direction.
A、
B、
C、
D、
What is the role of computers in the production process？
A．They control the techniques of production.
B．They keep each department well-informed.
C．They monitor the progress and status of work.
D．They transmit directions from the management to employees.
1. 有些人认为书应该借来看。
2.有些人认为书应该买来看。
3.你的选择。
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
(31)
A．Biology.
B．Chemistry.
C．Philosophy.
D．Medicine.
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
(31)
A．Water.
B．Heat.
C．Wind.
D．Power.
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
(31)
A．Its mysterious rituals.
B．Local pubs.
C．Lack of hospitability.
D．Conservativeness.
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
(31)
A．She was not intelligent.
B．She was too emotional.
C．She knew nothing about logic.
D．She didn't know how to think.
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
(31)
A．Ancient.
B．Complexity.
C．Individualistic.
D．Homogeneous population.
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
(31)
A．The Third Symphony.
B．The Fifth Symphony.
C．The Sixth Symphony.
D．The Seventh Symphony.
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