Here's a familiar story. You're sitting at the dinner table with a furry, four-legged friend scratching at your feet. When you look down, those cute eyes are almost impossible to resist.
What is it about a dog's gaze that makes it so charming? A new study by Japanese scientist Miho Nagasawa seems to have found the answer, and it has to do with something called the cuddle(爱抚)chemical.
The cuddle chemical has another, more scientific name: oxytocin. Oxytocin is a substance in the blood that encourages bonding. Levels of oxytocin increase, for example, when a mother feeds her newborn baby. According to Nagasawa's study, the same is true when we look deeply into the eyes of a dog.
The results of this study can tell us a lot about the history of the bond between humans and dogs. It all started somewhere tens of thousands of years ago. Scientists believe that wolves used to follow humans who were hunting large animals. The wolves would eat the food left behind by the humans.
Humans realized that they could use the wolves to help with the hunt, and eventually both species began to work together toward survival.
Over time, the wolves that interacted with the humans began to change. They became more loyal to their human partners. The wolves and humans started to depend on each other and bond with each other. These changes are what caused some of the wolves to turn into what we now know as dogs, a new specie^ evolved to better survive in their environment.
This process depended a great deal on the bond humans formed with them. And according to Nagasawa's study, this bond was formed with the help of oxytocin, the cuddle chemical.
11. What do we know about oxytocin?
- A.It regulates blood flow
- B.It promotes bonding
- C.It is in the human gene
- D.It is good for health
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The most traditional definition of a human community was "a group of people larger than a family that interact." A community may include people who have at least one common point of interest. In the past, community members lived relatively close to one another in one geographical location: in the same village, town, or city. Nowadays, however, the word community can mean a national, an international, or even an online group of interacting individuals. Therefore, a "new" definition of community might be "a group of people that recognize that they have something in common."
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Youare to write in no less than 100 words on the topic "A good book is a light to thesoul." You could base your composition on the Chinese outline givenbelow:
你最近读过的一本好书是什么?
它的主要内容是……
你从中有何受益?
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60
- A.settles down
- B.comes along
- C.turns on
- D.goes well
-
59
- A.on
- B.with
- C.in
- D.at
-
58
- A.surfing
- B.looking
- C.scanning
- D.tracking
-
57
- A.rejected
- B.accepted
- C.proposed
- D.postponed
-
56
- A.putting
- B.having
- C.drinking
- D.offering
-
55
- A.they
- B.it
- C.as
- D.that
-
54
- A.set about
- B.put up
- C.asked for
- D.took in
-
52
- A.That
- B.While
- C.How
- D.Which
2005年初级经济师考试《旅游经济专
初级旅游经济师试题及答案一
初级旅游经济师试题及答案二
2005年初级经济师考试《邮电经济专
初级经济师试题及答案1(邮电经济)
初级经济师试题及答案1(保险经济)
初级经济师试题及答案2(邮电经济)
初级经济师试题及答案2(保险经济)
初级经济师试题及答案3(保险经济)
2014年经济师初级考试真题《建筑经