答案:B
2. Babies are sensitive to the change in________.
A.the size of cards.
B.the colour of pictures.
C.the shape of patterns.
D.the number of objects.
解析:细节理解题。根据第一段第六句“As the cards change from one to the other,her gaze starts to lose its focusuntil a third,with three black spots,is presented.”可知,随着卡片上黑点的变化,婴儿的视线也发生了变化,表明婴儿对于数字的变化比较敏感。
答案:D
3. Why did the researchers test the babies with drumbeats?
A.To reduce the difficulty of the experiment.
B.To see how babies recognize sounds.
C.To carry their experiment further.
D.To keep the babies' interest.
解析:推理判断题。根据最后一段中的“The effect even crosses between senses.Babies who were repeatedly shown two spots became more excited when they then heard three drumbeats than when they heard just two...”可知,研究人员又做了击鼓的实验,发现婴儿的听觉对数字变化也同样敏感,其目的是更加深入地研究婴儿对于数字的敏感程度,故选C项。
答案:C
4. Where does this text probably come from?
A.Science fiction.
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