1. Jim his unhealthy lifestyle.
2. you want to be , you must eat less and more.
3. You must your , because you lots of energy.
4. Add more honey if you .
5. In order to , I decide to swim or go jogging for half an hour every day.
6. It's for me to lovely dogs.

1. plans to change 2. If; healthy; exercise 3. change; lifestyle; need 4. have a sweet tooth 5. get enough exercise; once a week 6. hard; say no to

【分析】这类题需结合中文提示，根据英语的固定搭配、常用短语及语法规则（如主谓一致、时态）补全句子。首先理解每句中文含义，再匹配对应的英语表达，注意动词形式、固定短语的准确使用等细节，比如主语为第三人称单数时动词要变形，固定短语需精准记忆。
【解析】1. 中文“计划改变”对应固定搭配plan to do sth，主语Jim是第三人称单数，一般现在时，故填plans to change；2. 中文“如果”对应If，“健康”是形容词healthy，“运动”对应动词exercise（情态动词must后用动词原形）；3. 中文“改变”是动词change，“生活方式”是名词lifestyle，“需要”是动词need（主语you用原形）；4. 中文“嗜好甜食”是固定短语have a sweet tooth；5. 中文“得到充分的锻炼”对应get enough exercise，“每周一次”是once a week；6. 中文“很难”是形容词hard，“拒绝”对应固定搭配say no to。
【答案】1. plans to change 2. If; healthy; exercise 3. change; lifestyle; need 4. have a sweet tooth 5. get enough exercise; once a week 6. hard; say no to
【知识点】固定短语搭配，一般现在时，条件状语从句
【点评】本题考查英语基础词汇、固定短语及常用句型，属于英语学习的基础题型，需学生积累常用表达，侧重基础巩固。
【难度系数】0.8

1. How many people did scientists at Arizona State University test in the experiment?

2. What did people in the first group eat each day?

3. In the experiment, the scientists wanted to study the effects(影响)of vinegar on ____.

4. What changes did the two groups of people show after four weeks?

5. According to the scientists, having more vitamin B3 could ____.

1. B 提示:细节理解题。根据第一段中“At Arizona State University in the US, scientists did an experiment on this. Twenty-eight people joined in the experiment.”可知,28人参加了实验。2. A 提示:细节理解题。根据第一段中“Every day, people in the first group had four spoonfuls of vinegar.”可知,第一组的人每天吃四勺醋。3. D 提示:细节理解题。根据第二段中“Four weeks later, the scientists tested the mental health of everyone.”可知,科学家想要研究醋对心理健康的影响。4. C 提示:细节理解题。根据第二段中“The symptoms of depression went down by 42 percent for the first group and 18 percent for the second.”可知,他们抑郁的症状都变轻了。5. B 提示:细节理解题。根据第二段中“The scientists said that having more vitamin B3 could help with depression.”可知,摄入更多的维生素 B3 可以让人们感觉好一些。

【分析】
这类阅读理解题目均为细节理解题，解题思路是先通读题干明确问题，再带着问题回到原文中定位对应信息，将选项与原文内容逐一比对，排除错误选项，选出与原文一致的答案。每道题都可通过定位原文的具体句子快速找到答案，无需复杂推理。
【解析】
1. 定位原文第一段“Twenty-eight people joined in the experiment.”，可知实验人数为28，对应选项B；
2. 定位第一段“Every day, people in the first group had four spoonfuls of vinegar.”，可知第一组每天吃四勺醋，对应选项A；
3. 定位第二段“Four weeks later, the scientists tested the mental health of everyone.”，可知研究的是醋对心理健康的影响，对应选项D；
4. 定位第二段“The symptoms of depression went down by 42 percent for the first group and 18 percent for the second.”，可知两组抑郁症状均减少，对应选项C；
5. 定位第二段“The scientists said that having more vitamin B3 could help with depression.”，可知更多维生素B3能帮助改善抑郁，让人感觉更好，对应选项B。
【答案】
1.B 2.A 3.D 4.C 5.B
【知识点】
英语阅读理解、细节理解题
【点评】
本文是一篇实验类英语阅读理解，题目全部为细节理解题，考查学生快速定位原文信息的能力，难度较低，只要能准确找到对应原文即可轻松作答，适合巩固细节查找的阅读技巧。
【难度系数】
0.9