【正文】 What Colm suffered.B. Colm’s present condition.C .What caused Colm’s allergy.D. Symptoms of Colm’s allergic reaction.42. Why does the author write the news?A. To describe a serious accident.B. To prove the importance of CPR. C. To report a 9yearold girl’s brave act.D .To call people’s attention to allergic reaction.【 B. Grouped. C. Organised. D. Named. 46. What does the text mainly talk about?A. Functions of the body clock.B. The “night owl” phenomenon.C. Human beings’ sleep behaviour.D. The school schedule of “early bird”.【內(nèi)容要點】這是一篇說明文。43. C 考查判斷推理。文章開頭便舉例——在星期一早上的課上只有20%的學生到，在上課15分鐘后，僅有10%的學生還醒著，有人還穿著睡衣，而最終歸結(jié)到本段的尾句Obviously, students are terrible at adjusting their sleep cycles to their daily schedule?？芍鸢笧镃。44. D 考查判斷推理。根據(jù)文章第二段the preferred sleep/wake cycle is delayed in adolescents（首選的醒睡周期在青少年身上被推遲了）第三段話This is opposed to the “early bird” schedule, and is a kind of disorder where the individual tends to stay up much past midnight可知，這種“night owl”現(xiàn)象是一種紊亂，并不是較優(yōu)的睡眠周期。45. B 考查猜測詞義。根據(jù)此句語境可知答案：調(diào)查結(jié)果表明大約20%的人可歸類為“貓頭鷹”型，只有10%的人可以歸為“早起”型。此處classify應(yīng)為“歸類，分類，分組”等意思。EWomen are friendly. But men are more petitive. Why? Researchers have found it’s all down to the hormone oxytocin(荷爾蒙催生素). Although known as the love hormone, it affects the sexes differently.“Women tend to be social in their behavior. They often share with others. But men tend to be petitive. They are trying to improve their social status,” said Professor Ryan.Generally, people believe that the hormone exytocin is let out in our body in various social situations and our body creates a large amount of it during positive social interaction（互動）such as falling in love or giving birth.But in a previous experiment Professor Ryan found that the hormone is also let out in our body during negative social interactions such as envy.Further researches showed that in men the hormone oxytocin improves the ability to recognize petitive relationships, but in women it raises the ability to recognize friendship.Professor Ryan’s recent experiment used 62 men and women aged 20 to 37.Half of the participants（參與者）received oxytocin. The other half received placebo（安慰劑）.After a week, the two groups switched with participants. They went through the same procedure with the other material.Following each treatment, they were shown some video pictures with different social interactions. Then they were asked to analyze the relationships by answering some questions. The questions were about telling friendship from petition. And their answers should be based on gestures, body language and facial expressions.The results indicated that, after treatment with oxytocin, men’s ability to correctly recognize petitive 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 raisepeople’s abilities to better distinguish different social interactions. And the behavior differences between men and women are caused by biological factor（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 a