The results indicated that, after treatment with oxytocin, men's ability to correctly recognize competitive relationships improved, but in women it was the ability to correctly recognize friendship that got better.
Professor Ryan thus concluded: "Our experiment proves that the hormone oxytocin can raise people's abilities to better distinguish different social interactions. And the behavior differences between men and women are caused by biological factors (因素) that are mainly hormonal."

47. What causes men and women to behave differently according to the text? 
A. Placebo.B. Oxytocin.C. The gesture.D. The social status.

48. What can we learn from Professor Ryan's previous experiment?
A. Oxytocin affects our behavior in a different way.
B. Our body lets out oxytocin when we are deep in love.
C. Our body produces oxytocin when we feel unhappy about others' success.
D. Oxytocin improves our abilities to understand people's behavior differences.

49. Why did Professor Ryan conduct the recent experiment?
A. To test the effect of oxytocin on the ability to recognize social interactions.
B. To know the differences between friendship and competition.
C. To know people's different abilities to answer questions.
D. To test people's understanding of body language.

50. The author develops the text by______.
A. explaining people's behaviorsB. describing his own experiences
C. distinguishing sexual differencesD. discussing research experiments

第二节 补全对话  根据对话内容，从对话后的选项中选出能填入空白处的最佳选项，并在答题卡上将该项涂黑。选项中有两项多余选项。（共5小题：每小题2分，满分10分）

Mary: Mike, how do I look in these blue jeans? 
Mike:   51   They really suit you, Mary!
Mary: Thanks, you know, these kinds of jeans are in style now. 
Mike:   52   
Mary: I mean...they are very popular these days; everyone is wearing them! 
Mike: You are great at keeping up with fashions. 
Mary: Well,     53   
Mike: Perhaps you can help me pick out a pair of jeans now, since you are an expert. 
Mary:   54   I would be happy to help you with your fashion change!

A. Wow, great!
B. No problem!
C. See you then.
D. Any suggestions?
E. I am a girl after all.
F. What do you mean?
G. Thank you so much!

第Ⅱ卷（非选择题共60分）
注意事项：
1. 必须使用0.5毫米黑色墨迹签字笔在答题卡上题目所指是的答案区域内作答。答在试题卷上无效。
2. 第Ⅱ卷共计50分）。
第三部分  写作（共三节共50分）

第一节  阅读表达（共5小题；每小题2分，共10分）

When my father was celebrating a milestone (里程碑) birthday, I pulled together a surprise gift that he would never forget.
As he was approaching 60,1 had a fim idea: What if I could get the memories people had of him, put each one into an envelope - 60 in total - and have him open them, one by one, on his birthday? So I wrote an e-mail to family and friends, explaining my idea.
I sent the e-mail and waited. And then the replies started coming in and I was very, very surprised. There were so many memories, and they were all so lovely. They came from the '50s, '60s, '70s, from every decade（十年） between now and the day my dad was bom. They came from my mother, my siblings, my grandma, my dad's friends from high school, his sister, my dad's first boss, a colleague at his first job, from people who hadn't seen my dad in 40 years, from people I myself hadn't even informed. They typed them and handwrote them. They mailed them and e-mailed them.
The night before Dad's birthday, my sister and 1 stayed up late, putting everything together with some