What can we infer from the passage？
American people need less sleep than others.
B. The dangers of sleepiness are still unknown.
C. The traditional attitude toward napping is wrong.
D. Napping can reduce stress.
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—Which driver was to blame？ —Why, ______ ! It was the child's fault, clear and simple. He
A. both
B. each
C. either
D. neither
How did Dr. Johnson feel about his major change in life many years ago？
A. He felt like changing too.
B. He felt sad and at a loss.
C. He felt lonely.
D. He felt like laughing.
A．soundB．strengthC．weaknessD．music
A. sound
B. strength
C. weakness
D. music
A．asB．sinceC．whereverD．whenever
A. as
B. since
C. wherever
D. whenever
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