单项选择题

Which of the following is NOT true to the passage

A．Tears can help to protect our eyes.
B．Teenage girls cry four times as often as boys.
C．People who cry more must feel better than otherwise.
D．We cannot imagine life without tears.

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单项选择题

What is the purpose of Winfred's research

A．The components of tears.
B．Why some people cry more often than others.
C．How tears help us deal with emotional problems.
D．Whether crying really helps people reduce stress.

单项选择题

What is the focus of the passage

A．The reasons for people's cry.
B．How tears are produced.
C．The function of tears.
D．The findings of Winfred.