单选题 9.  Referring to reading, we must have ______ patience to read a book so that we will have ______ deep understanding of it.
【正确答案】 C
【答案解析】 句意:谈到读书,我们必须要有耐心,这样才能更深入地了解一本书(的内容)。冠词用法题。第一个空后有定语to read a book修饰,表示特指,所以应用不定冠词the;have a deep understanding of为固定搭配,意为“对……有深入的理解”。故选C。