单项选择题

It can be inferred from the passage that ______.

A．most sharks are dangerous to human beings
B．sharks only attack someone in black wet suits
C．movies and popular novels are always misleading
D．sharks are a valuable resource for human beings

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热门试题

单项选择题

The phrase such powerful effects in Line 3 of Paragraph 3 refers to ______.

A．the fact that many people cannot sleep and wake refreshed
B．the fact that the brain puts us to sleep when we are worn out
C．your sight, hearing, and attention are slow to alert you to dangers
D．increased risk of health problems or a serious, even deadly accident

单项选择题

The word odds in Line 1 of Paragraph 1 means ______.

A．happiness
B．preferences
C．chances
D．capability