五、李华有几个关于健康的问题想请教李老师。李老师回答了问题，并给出了两点建议。
读一读，选择正确的答案。
()1. —How can I stay healthy, Miss Li? —
A. You should eat lots of sweet food.
B. You should eat three meals a day.
C. You should stay quiet.
()2. —How can I take care of my teeth, Miss Li? —
A. Brush your teeth once a day.
B. Brush your teeth for one minute each time.
C. You should see a doctor if you have a bad tooth.
()3. —I’m a little fat. What should I do, Miss Li? —
A. You should wash your hands before and after meals.
B. You should eat breakfast.
C. You should exercise outside every day.
()4. You shouldn’t check your phone bed, Li Hua.
A. on B. in C. at
()5. You should brush your teeth at least a day, Li Hua.
A. twice B. two C. second

1.B 2.C 3.C 4.B 5.A

1. 问句询问保持健康的正确方式，A选项吃大量甜食不利于健康，C选项保持安静不是维持健康的合理做法，B选项一日三餐是健康的良好习惯，符合题意。
2. 问句询问保护牙齿的正确方式，A选项每天只刷一次牙、B选项每次刷牙仅一分钟都不符合护牙的正确要求，C选项牙齿出现问题及时看牙医是正确的护牙建议，符合题意。
3. 问句询问偏胖应该采取的做法，A选项饭前便后洗手、B选项吃早餐都无法改善偏胖的状况，C选项每天进行户外锻炼是健康的减重方式，符合题意。
4. 本题考查固定搭配，in bed是固定表达，意为“在床上（卧床）”，因此选B。
5. 本题考查次数表达，"twice a day"是固定用法，意为“一天两次”，符合每天至少刷两次牙的健康常识，基数词two和序数词second都不能用来表达频率次数，因此选A。

六、李华正在班级中向同学们介绍他爷爷的健康生活习惯。填写合适的单词补全短文。
hours less happy always exercise easy
My grandpa is 75 years old. He's very healthy. He says we can do some
1. things to stay healthy. First, we should 2. every day. My grandpa takes a walk in the park every morning. Second, we should eat and drink healthily. It's a good habit to have three meals a day. And it's healthy to eat more vegetables and
3. meat. Third, we should sleep at least nine 4. every night. And it's important to go to bed and get up early. Last but not least, we should stay
5. . My grandpa never worries too much and 6. has a smile on his face.

1. easy 2. exercise 3. less 4. hours 5. happy 6. always

我们结合给出的备选词和上下文语境逐一分析：
1. 空格后是名词things，需要形容词修饰，easy表示“简单的”，some easy things 意为“一些简单的事”，符合“做简单的事保持健康”的语义。
2. 空格前是情态动词should，后面要接动词原形，exercise表示“锻炼”，和后文爷爷每天散步的习惯对应，符合语境。
3. 这里是并列结构more vegetables（更多蔬菜），对应less meat（更少的肉），less是little的比较级，符合健康饮食“多菜少肉”的常识。
4. 空格前是数词nine，后面接可数名词复数，hours表示“小时”，nine hours 意为“九小时”，指每晚至少睡九小时，符合语境。
5. 动词stay后接形容词表示保持某种状态，stay happy意为“保持开心”，和后文“不太过焦虑”的描述对应。
6. 空格后是实义动词has，需要用副词修饰，always表示“总是”，指爷爷脸上总是带着微笑，符合语义。