B．Endorphins may make people happier.

　　C．Sad movies are harmful to patients.

　　D．Laughter may benefit health.

　　解析：选D　推理判断题。由第二、三段可知，这项研究表明，笑可能有益健康。

　　2．What is a difficult problem for Bennett?

　　A．How to lead a research team.

　　B．How to study laughter and humor.

　　C．How to get support for her research.

　　D．How to do research on the immune system.

　　解析：选C　细节理解题。由第四段可知，对于Bennett来说，如何获得研究支持很困难。

　　3．Who got health benefits from watching comedies in the 2003 study?

　　A．Those who watched quietly.

　　B．Those who laughed aloud.

　　C．Those who watched often.

　　D．Those who laughed a lot.

　　解析：选B　细节理解题。由第五段中的"However, the effect was seen only in the subjects who laughed out loud"可知，在2003年的研究中，观看喜剧只对那些大笑的实验参与者有健康效果。

　　4．What does Bennett say about laughter?

　　A．It is effective in a limited way.

　　B．It can only cure some diseases.

　　C．It may replace some real medicine.

　　D．It will become a popular treatment.

　　解析：选A　推理判断题。由最后一段可知，Bennett认为笑只有有限的医疗作用。

　　B

　　Anne was sitting in the mountain of the village.It was her last spring in the mountain.That very day she would be leaving her aunt's house to rejoin her family in Los Angeles.She had been staying to finish the sixth grade when her parents readied their new home.

　　There was a presence beside her.Anne glanced to her left.There was another girl, who was drawing.It was a long time before the time was right for Anne to speak.

　　"Is this your Thinking Place too？" Anne asked.The other girl nodded and smiled, just a little.There was a piece of sadness，Anne realized, in that girl's blue eyes.There was more silence.Then the girl's question came, almost a whisper.

"What are you thinking about？" The eyes drifted to the tears still clinging to Anne's jaw.