Women are friendly. But men are more competitive. Why? Researchers have found it’s all down to the hormone oxytocin (荷尔蒙催生素). 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 competitive. They are trying to improve their social status,” said Professor Ryan.

Generally, people believe that the hormone oxytocin is let out in our body in various social situations and our body creates a large amount of it during positive social interactions (互动) 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 competitive 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 received oxytocin. The other half received placebo (安慰剂).

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 competition. 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 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 that are mainly hormonal.”

1.What causes men and women to behave differently according to the text?

A. Oxytocin. B. Placebo.

C. The gesture. D. The social status.

2.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. Oxytocin improves our abilities to understand people's behavior differences.

D. Our body produces oxytocin when we feel unhappy about others’success.

3.Why did Professor Ryan conduct the recent experiment?

A. To know the differences between friendship and competition.

B. To test the effect of oxytocin on the ability to recognize social interactions.

C. To know the differences between friendship and competition.

D. To know people’s different abilities to answer questions.

4.The author develops the text by __________.

A. explaining people's behaviors

B. describing his own experiences

C. discussing research experiments

D. distinguishing sexual differences

If doctors want to test you for something, they’ll usually take a blood or urine sample (尿样). But wouldn’t it be much more convenient if they just asked you to breathe through a special instrument?

In fact, your breath can say a lot about you. In traditional Chinese medicine, doctors draw a conclusion about the health state of a patient based on the smell of his or her breath; trained dogs and rats can identify the smells of the breaths of people suffering from certain cancers; traffic police also monitor drivers’ alcohol consumption by testing their breaths.

Just like blood and urine, your breath contains lots of “ metabolites ” --- the waste chemicals that the body produces, which vary from person to person. They are like personal health fingerprints, which is why scientists sometimes call them “ breath prints”, according to Science Daily.

Compared to blood or urine testing, breath testing takes only seconds instead of hours, and it requires neither a needle nor a container to hold the body fluids (体液). This means the test can be taken frequently to better detect early signs of diseases and monitor the progress of a medical treatment.

On the other hand, as an identifier, you might think that breaths are not as reliable as fingerprints since they might change based on what you eat. However, researchers in Zurich, Switzerland mapped 11 healthy volunteers’ chemical patterns by having them breathe through a special instrument, and they found that each pattern was unique and the patterns didn’t change much throughout the day, reported BBC.

“Our goal is to develop breath analysis to the point where it becomes competitive with the established analysis of blood and urine,” said Malcolm Kohler, professor at the University Hospital Zurich.

1.According to the text we know that __________.

A. breath varies from person to person based on food

B. your breath may give you away if you are not careful

C. doctors can test one’s breath to find about his illness

D. dogs can identify people with certain cancers

2.In comparison with blood or urine testing, breath testing is __________.

A. comfortable and convincing

B. traditional and reliable

C. accurate and competitive

D. quick and convenient

3.What is the author’s attitude toward breath testing?

A. Doubtful. B. Approving.

C. Unconcerned. D. Worried.

4.What can we infer from the text?

A. Breath testing is reliable and may have a bright future.

B. Blood or urine testing will be less used in medical treatment.

C. Doctors have found the best way to detect early signs of diseases.

D. Traditional Chinese medicine is becoming more and more popular.

完形填空

阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

John’s parents acquired the washer when he was a small boy. It happened during World War II. His family never ________ a washing machine and, since gasoline was expensive, they could not ________ trips to the laundry several miles away. Keeping clothes ________ became a problem for young John’s household.

A family friend joined the army, and his ________to go with him. John’s family ________ to store their furniture while they were away. To the family’s ________ , the friend suggested they use their Bendix. So this is how they ________ the washer.

Young John helped with the washing, and across the years he ________ a love for the old, green Bendix. But ________ the war ended. When the friends came to take it back, John grew terribly ________ . His mother ________ him and said. “You must remember, that machine ________ belonged to us in the first place. That we ever got to use it at all was a gift. So, instead of being mad at it being taken ________ , let’s use this ________ to be grateful that we had it at all.”

The lesson turned out ________ . Years later, John watched his eight-year-old daughter die a slow and painful death of leukemia (白血病). Though he ________ for months with her death, John could not begin getting over from the ________ until he remembered the old Bendix.

His daughter was a ________ . When he realized the simple fact, everything changed. He could now begin recovering from the death of his daughter. He started to see her as a marvelous gift that he was fortunate enough to ________for a time. He felt ________ . He found strength and recovery. He knew he could get through the valley of loss.

1.A.requiredB.repairedC.ownedD.saw

2.A.affordB.haveC.takeD.ride

3.A.goodB.cleanC.warmD.nice

4.A.refusedB.agreedC.consideredD.prepared

5.A.decidedB.offeredC.expectedD.promised

6.A.regretB.excitementC.sadnessD.astonishment

7.A.usedB.boughtC.borrowedD.got

8.A.producedB.developedC.achievedD.reduced

9.A.finallyB.obviouslyC.peacefullyD.immediately

10.A.upsetB.hopelessC.confusedD.frightened

11.A.encouragedB.comfortedC.taughtD.explained

12.A.onceB.alreadyC.hardlyD.never

13.A.downB.awayC.outD.up

14.A.chanceB.successC.eventD.treasure

15.A.importantB.reasonableC.invaluableD.necessary

16.A.thoughtB.missedC.struggledD.forgot

17.A.lossB.illnessC.difficultyD.lesson

18.A.washerB.deathC.giftD.loser

19.A.earnB.spendC.shareD.live

20.A.happyB.gratefulC.relaxedD.energetic

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