A good way to pass an exam is to work hard every day in a year. You may fail in an exam if you are lazy for most of the year and then work hard only a few days before the exam. If you want to be good at English, you have to read stories in English, and to speak English as much as possible. A few days before the exam you should go to bed early. Do not go to bed late at night. Before you start answering in the exam, read carefully over the question papers, and try to understand the meaning of each question. When you have finished your exam, read over your answers. Correct the mistakes and be sure that you don't miss anything out.

下列标点符号使用不正确的一项是（    ）

晓望

杜甫

白帝更声尽，阳台曙色分。高峰寒上日，叠岭宿霾云。

地坼江帆隐，天清木叶闻。荆扉对麋鹿，应共尔为群。

【注】这首诗作于唐代宗大历二年（767），杜甫当时流寓夔州瀼西。