问题
单项选择题
Which of the following statements is true of dyslexia
a. It is a worldwide problem.
b. It is a regional problem.
c. It is a social problem.
d. It is a biological problem.
答案
参考答案：A
解析：
Which of the following statements is true of dyslexia
[分析]： 事实细节的找寻和判断。
第一段第二句便提到“The problem is universal...”由此可见，诵读困难是全世界普遍存在的问题，因此，选项a的说法符合原文意思，是正确答案。
[解题关键] 掌握同义词替换。原文中的universal与选项中的worldwide意思等同。