Which of the following is true of Doctor Cochran？
A. He was indifferent in nature.
B. He was an ardent lover.
C. He was clumsy at expressing himself.
D. He bore a grudge against his wife.
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How many hours of sleep are the healthiest for most people？
At least eight hours.
B. Around seven hours.
C. As many as you need.
D. Less than seven hours.
Which of the following activities is mostly close to parkour？
A. Jogging.
B. Obstacle race.
C. Gymnastics.
D. Acrobatic performance.
According to the passage," critical thinking skills" (Line 1, Para. 3) refers to skills of______.
A. judging and giving comments on something
B. decisive thinking
C. conquering crisis
D. finding out essentials
Which of the following statements can be inferred from the passage？
A. Women are more likely to die from inappropriate sleep.
B. Less sleep shortens the life span of both men and women.
C. Generally speaking, women need more sleep hours than men.
D. Longer sleep is more harmful to men.
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