They may be small and not able to speak, but babies are proving their amazing cleverness.

They may be small and not able to speak, but babies are proving their amazing cleverness. Scientists began finding infants’ skills are more than they are supposed to be.
    
Speaking of music, babies can’t seem to resist it. Not only are their ears turned to the beats, babies can actually dance to the music.
To test babies’ dancing ability, the researchers played recordings of classical music, rhythmic beats and speech to infants, and recorded the results. They also invited professional dancers to analyze how well the babies matched their movements to the music. The babies moved their arms, hands, legs feet and heads in response to the music, much more than to the speech. The finding suggests this dancing ability is innate(与生俱来的) in humans, though the researchers aren’t sure why it bees weaker later in their life.
Learning Quickly while Sleeping
Babies can learn even while asleep, according to a 2011 study. In experiments with 26 sleeping infants, each just 1 to 2 days old, scientists played a musical tone followed by a puff of air to their eyes 200 times over the course of a half-hour. 124 electrodes(电极) stuck on the head and face of each baby recorded brain activity during the experiments. The babies rapidly learned to foretell a puff of air upon hearing the tone, showing a four-time increase on average in the chances of tightening their eyelids in response to the sound by the end of the experiments.
As newborns spend most of their time asleep, this newfound ability might be crucial to rapidly adapting to the world around them and help to ensure their survival, researchers said.
Judging Characters Well
Judging another person helpful or harmful is crucial when choosing friends. And that ability starts early. Kiley Hamlin of Yale University showed both 6-and 10-month-olds a puppet(木偶) show, in which one character helped another climb a hill. In another scene a third character pushed the climber down. The little ones then got to choose which character they preferred. For both age groups, most babies chose the helper character. This character-judging ability could be baby’s first step in the formation of morals, Hamlin thought.
【小题1】Which of the following subtitles can fill in the underlined blank?A．Dancing to MusicB．Babies’ Amazing AbilitiesC．Learning to Dance QuicklyD．Born to Dance【小题2】The underlined word “it” in the third paragraph refers to    .A．the findingB．the dancing abilityC．the responseD．the baby【小题3】The experiment with 26 sleeping infants prove that    .A．babies can learn even while asleepB．babies can respond to the world around themC．babies can tighten their eyelids in response to the soundD．babies can municate with others while asleep【小题4】In the last experiment, most babies chose the helper character, showing that    .A．babies can judge a person helpful or harmfulB．babies love to see a puppet showC．babies were born to help othersD．babes have learned to help othersD