C．were less active

　　D．woke up later

　　2．Which of the following is true of melatonin according to the text?

　　A．It’s been tested on mice for ten times.

　　B．It can make people more energetic.

　　C．It exists in milk in great amount.

　　D．It’s used in sleeping drugs.

　　3．What can be a suitable title for the text?

　　A．Night Milk and Sleep

　　B．Fat Sugar and Health

　　C．An Experiment on Mice

　　D．Milk Drinking and Health

　　4．How does the author support the theme of the text?

　　A．By giving examples.

　　B．By stating arguments.

　　C．By explaining statistical data.

　　D．By providing research results.

　　Passage 2

　　(2016·全国Ⅲ)Bad news sells.If it bleeds, it leads.No news is good news, and good news is no news.Those are the classic rules for the evening broadcasts and the morning papers.But now that information is being spread and monitored(监控) in different ways, researchers are discovering new rules.By tracking people’s e－mails and online posts, scientists have found that good news can spread faster and farther than disasters and sob stories.

　　“The ‘if it bleeds’ rule works for mass media，” says Jonah Berger, a scholar at the University of Pennsylvania.“They want your eyeballs and don’t care how you’re feeling.But when you share a story with your friends, you care a lot more how they react.You don’t want them to think of you as a Debbie Downer.”

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