Kids are far better than adults at learning how to speak multiple languages. Research now

Kids are far better than adults at learning how to speak multiple languages. Research now shows that very young infants might have some of the best language skills of all．

A new study suggests that babies between 4 and 6 months old can tell the difference between two languages just by looking at the speaker's face．They don't need to hear word．Sometimes between 6-8 months of age, babies raised in homes where just one language is spoken lose this ability．Babies from bilingual(双语的) homes, on the other hand, keep the face-reading ability until they're at least 8 months old．
Researchers in Canada studied 36 babies from English-speaking families．Twelve of the babies were 4 months old,12 were 6 months old, and the rest were 8 months old．Each baby sat on his or her mother's lap and watched video clips(电影片断) of a woman talking．The woman was fluent in both English and French．In some clips, she read from a storybook in English．In other clips, she read in French．In all of the videos there was no sound．
【小题1】What is mainly discussed in the passage ?A．Language teaching．B．Language learningC．Babies and language learningD．Parents and language teaching【小题2】What do the underlined word in the second paragraph refer to ?A．Two or more．B．Foreign.C．difficult.D．At least one.【小题3】We can know from the passage that    .A．all the babies in the study are of the same age．B．the babies could hear the woman's voice while watching the videos．C．the stories the woman read were written in either French or German．D．it's still unknown how babies could tell the difference between languages．【小题4】Why did the 8-month-old pay no attention when the language was changed ?A．They had lost the ability to distinguish different languages．B．They were too tired to open their eyes and fell asleep．C．They couldn't hear what the speaker was talking about．D．They had lost the interest in bilingual speakers．C