《2025年练习部分九年级英语上册沪教版54制》

1 How heavy is a human brain?A human brain weighs about 1.4 kg/kilograms.
2 Which is more powerful, a cell or a computer?A cell is more powerful.
3 What stores information and gives instructions to the rest of the body?The grey matter stores information and gives instructions to the rest of the body.
4 What can we do to make some parts of our brains bigger?We can make some parts of our brains bigger if we use them a lot.
5 Why can we remember smells better than we can remember words or pictures?Because the part of our brains that remembers smells is close to the part that stores memories.

答案： 1 A human brain weighs about 1.4 kg/kilograms. 2 A cell is more powerful. 3 The grey matter stores information and gives instructions to the rest of the body. 4 We can make some parts of our brains bigger if we use them a lot. 5 Because the part of our brains that remembers smells is close to the part that stores memories.