The new study involved showing videos to 36 infants of three bilingual speakers reciting sentences.

　　After being trained to become comfortable with a speaker reciting a sentence in one language，babies aged 4 and 6 months spent more time looking at a speaker reciting a sentence in a different language，demonstrating that they could tell the difference.

　　47．From the text，we can see babies are better at ________.

　　A．speaking

　　B．listening

　　C．reading

　　D．writing

　　解析　推理判断题。从文中的研究发现可知。

　　答案　B

　　48．The word “infant” originated from ________.

　　A．English

　　B．German

　　C．Greek

　　D．Latin

　　解析　细节理解题。由第二段的第一行可知。

　　答案　D

　　49．Which of the following do you agree to according to the passage?

　　A．The findings were published in a newspaper.

　　B．Soon after birth，infants can see details in the world as well as adults.

　　C．Infants 6 months old are capable of telling the difference between two monkey faces，which is beyond an older person.

　　D．Infants can read the consonants and vowels of all languages on earth.

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