Reading Comprehension

Question 1 of 82

What does the phrase 'phased in' mean as it is used in the third paragraph?

A. stunned into silence

B. confused

C. implemented in stages

D. legalized

Correct Answer:

Rationale:

Question 2 of 82

Which of the following statements is not supported by the passage?

A. Ventricular contracting injects roughly 70 mL of blood into the vascular system.

B. Blood pressure is typically measured in the brachial artery of the arm.

C. Blood pressure is usually represented as a ratio of systolic pressure to diastolic pressure.

D. Loss of arterial wall elasticity is always caused by disease.

Correct Answer:

Rationale:

Question 3 of 82

What is the main idea of the passage?

A. Trains and ambulances produce specific sounds

B. Low-frequency waves produce high-pitched sounds.

C. High-frequency waves produce low-pitched sounds.

D. The Doppler Effect explains why sound is heard more strongly initially and then faintly after a moving object has passed.

Correct Answer:

Rationale:

Question 4 of 82

What is the author's primary purpose in discussing the Doppler Effect in this essay?

A. To entertain the reader with information about trains and ambulances

B. To inform the reader about avoiding accidents involving trains and ambulances

C. To inform the reader about how movement affects sound

D. To analyze the difference between train and ambulance sounds

Correct Answer:

Rationale:

Question 5 of 82

Which sound waves have a higher pitch?

A. Sound waves that are closer together

B. Sound waves that are farther apart

C. Sound waves that travel a long distance

D. Sound waves that travel a short distance

Correct Answer:

Rationale:

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