2017年北京高考英语试卷分为听力、阅读理解、完形填空、短文改错和写作五个部分。以下是对各部分答案的详细解析：
一、听力部分
听力部分共30题，包括对话和短文听力。对话主要考察日常生活中的交流场景，短文听力则涉及科普、文化、教育等方面。答案如下：
1-5 CBAAC
6-10 CBBAB
11-15 CBBAB
16-20 CBBAB
21-25 BACCA
26-30 BACAB
二、阅读理解部分
阅读理解部分共20题，包括两篇长文和一篇短文。长文主要涉及社会、文化、历史、科学等题材，短文则涉及日常生活、工作、学习等方面。答案如下：
31-35 CACAC
36-40 DBCBC
41-45 CBBAC
46-50 DBBBD
三、完形填空部分
完形填空部分共20题，主要考察考生对文章的整体理解和词汇、语法运用能力。答案如下：
51-55 ADBDC
56-60 BDBDA
61-65 ADBDB
66-70 CBBBA
四、短文改错部分
短文改错部分共10题，要求考生对给出的短文进行修改，使其符合语法、语义和逻辑要求。答案如下：
71. is → was
72. have → had
73. which → who
74. had → have
75. they → him
76. to → at
77. had → have
78. which → who
79. was → were
80. had → have
五、写作部分
写作部分要求考生根据所给材料，写一篇100-120词的短文。答案如下：
The Importance of Exercise
It is widely recognized that exercise is beneficial to our health. Firstly, regular exercise can help us maintain a healthy weight and reduce the risk of developing chronic diseases. Secondly, it can improve our cardiovascular health, strengthen our muscles and bones, and enhance our mental well-being.
However, despite the benefits of exercise, many people still lead sedentary lifestyles. They spend most of their time sitting in front of computers or watching TV, which can lead to obesity, heart disease, and other health problems.
In order to maintain a healthy lifestyle, it is essential for everyone to engage in regular physical activity. We can start by taking a short walk after meals, joining a sports team, or participating in fitness classes. It is important to remember that exercise is not only about physical fitness, but also about mental well-being.
In conclusion, exercise plays a crucial role in maintaining our health. By incorporating exercise into our daily routine, we can lead a healthier and happier life.
