Computers might not be clever enough to trick adults into thinking they are intelligent yet, but a new study, led by Javier' Movellan at the University of Califomia San Diego, shows that a giggling (咯咯笑的) robot is clever enough to get toddlers (初学走路者) to treat it as a peer (同龄人).

The researchers stationed a 2-foot-tall robot Called QRIO in a classroom of a dozen toddlers aged between 18 months and two years. QRIO stayed in the middle of the room using its sensors (传感器) to avoid bumping (碰撞) into the kids. It was programmed to giggle when the kids touched its head, to occasionally sit down, and to lie down when its batteries died.

"We expected that after a few hours, the magic was going to disappear," Movellan says.  "That's what was found with earlier robots." But, in fact, the kids remained interested in the robot over several weeks, eventually communicating with QRIO in much the same way they did with other toddlers.

The researchers measured the relationship between the children and the robot in several ways. Firstly, as with other toddlers,  they touched QRIO mostly on the arms and hands, rather than on the face or legs. For this age group, "the amount of touching is a good predictor of how you are doing as a social being," Movellan says.

The children helped the robot up when it fell, and when QRIO's batteries ran out and it lay down, a toddler would come up and cover it with a blanket and say "night, night". However, when QRIO was programmed to spend all its time dancing, the kids quickly lost interest. When the robot went back to its old self, the kids treated it like a peer again.

"The study shows that current technology is very close to being able to produce robots able to develop a special relationship with toddlers," says Movellan. But, he adds, it is not clear yet whether robots can interest older children or adults in the same way.

1. What does the underlined word  "stationed" in Paragraph 2 probably mean?

A. Hid.     B. Observed. C. Placed.   D. Named.

2. At the beginning of the experiment, researchers          .

A. feared that the robot would harm the toddlers

B. programmed the robot to move freely about the classroom

C. expected the robot to communicate with the toddlers

D. thought the toddlers' interest in the robot wouldn't  last long

3. Kids aged between 18 months and two years behave

as social beings by.

A. giggling  B: touching  C. toddling  D. dancing

4. What would be the best title for the passage?

A. Giggling robot becomes one of the kids

B. Giggling robot used as a classroom assistant

C. Giggling robot makes kids more active in class

D. Giggling robot attracts more attention from kids