She is so helpful that she is always ready to help people in trouble. Which of the followi

问题补充：

She is so helpful that she is always ready to help people in trouble. Which of the following is correctfor the underlined word in the sentence?

A. / r37bl/

B. / ra7bl/

C. / rKbl/

D. / r?bl/

答案：

A. / r37bl/

B. / ra7bl/

(答案→)C. / rKbl/

D. / r?bl/

解析：句意：她是如此有用，她总是乐于帮助有困难的人。对于句子中的划线单词下列哪项是正确的？此题属于比较简单的根据所给单词来确定其音标（其实跟句子没有关系），关键在于掌握元音字母组合ou的发音。本题选C。