单项选择题

The purpose of this passage is______.

A．to explain why people fail to act in emergencies
B．to explain when people will act in emergencies
C．to explain what people will do in emergencies
D．to explain how people feel in emergencies

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热门试题

单项选择题

The researchers have conducted an experiment to prove that people will act in emergencies when ______.

A．they are in pairs
B．they are in groups
C．they are alone
D．they are with their friends

单项选择题

Which of the following is NOT true

A．When a person tries to help others, he must be clear that there is a real emergency.
B．When a person tries to help others, he should know whether they are worth his help.
C．A person must take the full responsibility for the safety of those in emergencies if he wants to help.
D．A person with a heart attack needs help.