Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.
A newborn baby can see, hear and feel. By the age of five, a child can talk, ride a bike and invent imaginary friends. How does this development happen? We don't understand the way language, thinking and planning develop very well. Now scientists are using new technology to ‘see’ into children's brains. And they are discovering new information about the way a baby's brain develops.
A study in 2010 showed that the experiences a child has in their first few years affect the development of the brain. It showed that children who received more attention often had higher IQs. The brain of a newborn baby has nearly a hundred billion neurons. This is the same number as an adult's brain. As they grow, a baby receives information through the senses of sight, hearing, smell, taste and touch. This information creates connections between different parts of the brain. At the age of three, there are a hundred trillion connections.
One experiment looked at images of babies' brains while they were listening to different sounds. The sounds were in different sequences. For example, one sequence was mu-ba-ba. This is the pattern ‘A-B-B’. Another sequence was mu-ba-ge. This is the pattern ‘A-B-C’. The images showed that the part of the brain responsible for speech was more active during ‘A-B-B’ patterns. This shows that babies can tell the difference between different patterns. This experiment is interesting because sequences of words are important to grammar and meaning. Compare two sentences with the same words in a different order: ‘John killed the bear’ is very different from ‘The bear killed John.’ So babies are starting to learn grammatical rules from the beginning of life.
Researchers also know that babies need to hear a lot of language in order to understand grammar rules. But there is a big difference between listening to television, audio books or the internet, and interacting with people. One study compared two groups of nine-month-old American babies. One group watched videos of Mandarin Chinese sounds. In the other group, people spoke the same sounds to the babies. The test results showed that the second group could recognise different sounds, however the first group learned nothing. The scientist, Patricia Kuhl, said this result was very surprising. It suggests that social experience is essential to successful brain development in babies.
Which statement is supported by the second paragraph?
A. Adult brains have more neurons than new-born babies' brains
B. Babies and three-year-olds have the same number of neurons
C. Early experiences have an effect on brain development
D. The connections between parts of the brain stay the same as a child grows up
Kiến thức: Đọc hiểu
Giải thích:
Phát biểu nào được hỗ trợ bởi đoạn thứ hai?
A. Não người trưởng thành có nhiều tế bào thần kinh hơn não của trẻ sơ sinh.
B. Trẻ sơ sinh và trẻ ba tuổi có cùng số lượng tế bào thần kinh.
C. Trải nghiệm ban đầu có ảnh hưởng đến sự phát triển não bộ
D. Các kết nối giữa các phần của não vẫn giống nhau khi một đứa trẻ lớn lên.
Thông tin: A study in 2010 showed that the experiences a child has in their first few years affect the development of the brain.
Tạm dịch: Một nghiên cứu vào năm 2010 cho thấy những trải nghiệm của một đứa trẻ trong vài năm đầu tiên ảnh hưởng đến sự phát triển của não.
Chọn C