1. 阅读短文，回答问题

The secret to happiness is keeping busy, research has found. Keeping the mind occupied with tasks—no matter how meaningless—keeps off negative feelings, the study found.

However, the bad news is that humans seem hard­wired (天生的) to be lazy in order to save energy, according to Professor Christopher K. Hsee, a behavioural scientist at the University of Chicago.

In a study, 98 students were asked to complete two surveys. After they have completed the first they were made to wait 15 minutes to receive the next one.

They were given a choice of either handing in the first survey nearby or at a more distant location they had to walk to. Whichever option they chose, they would receive a chocolate bar. It turned out that approximately two­thirds(68 students) chose the lazy option. Those who had taken the walk reported feeling happier than those who had stayed.

Prof. Hsee concluded keeping busy helped keep people happy. He said the finding, reported in the journal Psychological Science, had political implications (可能的影响).

"Governments may increase the happiness of lazy citizens by having them build bridges," he proposed.

At the individual level, he advised, "Get up and do something. Even if there really is no point in what you are doing, you will feel better for it." He added, "Incidentally, thinking deeply or engaging in self­reflection can be regarded as keeping busy, too."

"You do not need to be running around. You just need to be engaged, either physically or mentally."

1. （1） Why can keeping busy make people happy?

   A . It can help people get rid of laziness. B . It can make people sleep better. C . It can help people get rid of negative feelings. D . It can give people a sense of achievement.
3. （2） What can we learn from the passage?

   A . The finding may contribute to politics. B . The officials have taken Prof. Hsee's advice. C . In the study half students didn't hand in the first survey nearby. D . The government can increase citizens' happiness by building bridges.
5. （3） Which of the following will Prof. Hsee agree?

   A . Only by keeping working all the time can you gain happiness. B . The journal Psychological Science has political implications. C . Keeping busy can add to the possibility of being happy. D . That everybody is born to be lazy is accepted by all.
7. （4） What's the author's purpose in writing this passage?

   A . To explain what happiness is. B . To advise people not to sit around. C . To advise people to do what they like to. D . To show people how to take life correctly.