The text compares the brain to weeds
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The brain is a system of neuronal networks that can change.
A. 对
B. 错
Whenever we learn anything, a change happens in our brain
A. 对
B. 错
We can't really make our brain stronger.
A. 对
B. 错
Being able to do difficult tasks is good for the brain.
A. 对
B. 错