Question

                     C ★★★★☆

    Food can be a great cause. And just like people,animals often get quite creative when they’ re in the mood for a meal or treat. Now a video shows Asian elephants cleverly blow air to move food.

    Kaori Mizuno and colleagues worked with two female Asian elephants,Mineko and Suzuko. The two elephants lived in an area surrounded by a U-shaped ditch(壕沟) .The ditch was just shallow enough that an elephant could reach an object on the bottom with its trunk(象鼻) .But it couldn’t reach an object on the far side of this ditch. This let Mizuno’s team set up a difficulty for the animals. They xegularly set out tasty treats,apples,bamboo,potatoes or fallen leaves on the far side of the ditch. Both elephants were caught on film blowing their trunks to draw the food. Each would reach out her trunk,aim backwards a bit and then blow out a few puffs of air. That drove the food so that it was close enough to catch. Mineko used fewer puffs,blew longer and aimed better than Suzuko.

    Scientists once believed that only humans used tools. It's worth looking at the elephants’ behavior again. Is trunk-blowing considered tool use? The classic definition of a tool is “the external (外部的) employment of an unattached environmental object.w Air is not an “object ,” So it may not qualify. But what may be more important to consider is the thinking processes that drive the behavior.

    The researchers are unsure how the elephants picked up this trunk-blowing behavior. They might have done it by accident. But the fact that two females living together are both showing the same behavior suggests that one elephant may have copied it. And let’s hope so. After all,elephant trunk-blowing might be entertaining.

9. What has Kaori Mizuno5 s team found out?

   A. Elephants eat too much.

   B. Elephants can bring food closer.

    C. Elephants are popular with people.

   D. Elephants are brave to do dangerous things.

10. What was the function of the ditch in the experiment?

   A. Toserveasachallenge.

   B. To protect the elephants.

    C. To make the elephants excited.

   D. To make the elephants’ habitat larger.

11. According to Paragraph 3 ,the research .

   A. gives the definition of a tool

   B. proves elephants use tools too

    C. shows elephants are important animals   

    D. suggests attention be paid to the drive of trunk-blowing 

12. The underlined word “so” in the last paragraph refers to.

   A. elephants are good at playing tricks

   B. elephants can learn from each other 

    C. elephants pick up the food by chance

   D. elephants are cleverer than other animals 

Answer 1

C篇本文主要讲述了大象借助空气进行吸呼气来 够取食物。

9.B. 细节理解题。根据第一段中的Now a video shows Asian elephants using cleverly aimed puffs of air to move food以及全文内容可知，大 象会利用吹气流的方法巧取食物。

10. A.推理判断题。根据第S段中的Thislet Mizuno's team set up a difficulty for the animals 可知，壞沟是作为一个障碍物i挑战的。

11.D. 细节理解题。根据第二段中的But what may be more important to consider is the thinking processes that drive the behavior 可知， 大象利用吹气流的方法巧取食物缘由值得关注和研宄。

12.B. 推理判断题。根据最后一段中的one elephant may_ have copied it 可知，这里的 so 指 代的是大象之间相互模仿。