The concept of neuroplasticity has revolutionized our understanding of the human brain. Traditionally, scientists believed that the brain's structure was fixed after a critical period in childhood. However, recent research demonstrates that the brain remains malleable throughout life, constantly reorganizing its neural pathways in response to experience. This adaptability is particularly evident in individuals who have suffered brain injuries; healthy regions can assume functions previously performed by damaged areas. Moreover, neuroplasticity underlies learning and memory, as synaptic connections are strengthened or pruned based on activity. While this capacity offers hope for rehabilitation, it also implies that negative experiences, such as chronic stress, can reshape the brain in detrimental ways, leading to anxiety or depression. Thus, neuroplasticity is a double-edged sword, highlighting the profound impact of environment and behavior on neural architecture.
❓ According to the passage, which of the following statements best reflects the main idea?
A. A) The brain's structure is fixed after childhood and cannot change.
B. B) Neuroplasticity allows the brain to adapt positively but can also lead to negative changes.
C. C) Brain injuries are always fully repaired through neuroplasticity.
D. D) Chronic stress has no effect on the brain's neural pathways.
✅ 正确答案
B) Neuroplasticity allows the brain to adapt positively but can also lead to negative changes.
IELTS Reading Tips
Skim the questions first, underline keywords, then locate in the passage
Watch for paraphrasing; correct answers are often reworded
Be wary of absolute statements (all, always, never) — usually wrong
Pay attention to content after transition words (however, but, yet)
Manage time: about 20 minutes per passage; skip difficult questions first