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Pigs may be more clever than we thought. They may be able to play video games. Researchers at Purdue University in Indiana, the USA carried out a research on pig-gaming skills. The researchers were surprised that their test pigs were able to play some games.

Researchers got the four pigs, named Ebony, Hamlet, Ivory and Omelet, to play a simple game at different levels. They had to move a joystick(操纵杆) with their nose to make a cursor move to a coloured wall. If they were successful, they got a tasty treat. Lead author Dr. Candace Croney said, "It's very clear that they knew what they were being asked to do." The research is in a paper published in the journal Frontiers in Psychology.

The research was quite wide. The pigs spent many days playing the game. During the last 50 rounds, the pigs played the game on three different levels. If they were successful at one level, they moved to the next level. The higher levels had better treats. A scientist said, "The pigs clearly understood the connection between their own behavior, the joystick, and what was happening on the screen." Dr. Croney said it was important to understand how pigs get information, and what they are able to learn and remember. She said this would help us to learn what pigs think of interacting with humans. We could also understand what pigs think of different environments.

1.The pigs were tested to _______.

A play video games

B play with balls

C read newspapers

D listen to the radio

解析：选A。细节理解题。根据第一段The researchers were surprised that their test pigs were able to play some games. 可知，猪被测试玩游戏。故选A。

2.How did the pigs play games?

A With their tail.

B With their nose.

C With their feet.

D With their mind.

解析：选B。细节理解题。根据文章第二段They had to move a joystick(操纵杆) with their nose to make a cursor move to a coloured wall.可知，猪必须用鼻子移动游戏杆才能使光标移动到彩色墙上。故选B。

3.Which of the following statements is NOT true?

A Four pigs took part in the tests.

B The pigs got better treats in the higher levers.

C The pigs spent 50 rounds playing in every level.

D The pigs had to move a cursor to a coloured wall.

解析：选C。细节理解题。根据文章最后一段第三句During the last 50 rounds, the pigs played the game on three different levels.可知，在最后50轮比赛中，猪队分三个不同的等级进行比赛。故选C。

4.What can we learn from the research?

A Pigs seemed to know human’s tricks.

B Nothing could make pigs play games except treats.

C The behavior of pigs changed during the game.

D It helps us better understand pigs’ behavior and thinking.

解析：选D。推理判断题。根据文章最后一段She said this would help us to learn what pigs think of interacting with humans. We could also understand what pigs think of different environments.可知，克罗尼博士表示，这项研究将有助于我们了解猪对与人类互动的看法，我们也能理解猪对不同环境的看法。由此说明该研究有助于我们更好地理解猪的行为和思维。故选D。