Ⅳ. Read and answer the questions.
Imagine you're hiking and thirsty, instead of carrying a heavy plastic bottle, you have a small and soft ball that holds water. When you finish drinking, you can even eat the ball! This is the edible water bottle, which is made to cut down on serious plastic waste.

Billions of plastic bottles are thrown away every year. They pollute our environment and take hundreds of years to break down. To solve this problem, the seaweed(海藻) is mixed with water and shaped into soft and clear balls. They have no taste but are safe to eat. They break down easily in nature.
These eco-friendly bottles are not just for hikers. They're also used at music festivals and sports games around the world. New kinds for juice and coffee are being developed. This simple invention brings great changes to our daily life.
()1. What does the underlined word "edible" in Paragraph 1 mean?
A. Easy to carry. B. Safe to eat.
C. Hard to break. D. Cheap to make.
()2. Which of the following materials is used to make the edible water bottle?
A. Plastic. B. Paper. C. Seaweed. D. Wood.
3. Why is the edible water bottle good for nature?

1. B
2. C
3. One possible version: It can help cut down plastic pollution and it is easy to break down.

【分析】
第1题是词义猜测题，需结合上下文语境：文中提到喝完水可以“eat the ball”，说明这个水瓶是可以吃的，据此推测“edible”的含义；第2题是细节理解题，直接定位原文查找制作材料；第3题是细节理解题，从原文提取对自然有益的原因。
【解析】
1. 词义猜测：根据第一段“you can even eat the ball”可知，这个水瓶是可食用的，“edible”意为“安全食用的”，对应选项B。
2. 细节查找：根据第二段“the seaweed(海藻) is mixed with water and shaped into soft and clear balls”可知，制作材料是海藻，对应选项C。
3. 原因提取：根据第一段“made to cut down on serious plastic waste”和第二段“They break down easily in nature”可知，可食用水瓶能减少塑料污染，且在自然界易分解，对自然有益。
【答案】
1. B 2. C 3. It can help cut down plastic pollution and it is easy to break down.
【知识点】
词义猜测题、细节理解题、阅读理解
【点评】
本题为环保主题的英语阅读理解题，考查学生的词义推测、信息定位和内容归纳能力，题目贴近生活实际，难度适中。
【难度系数】
0.6

Ⅴ. Think and say.
Which invention above do you think is the most useful? Why?

示例：I think the mobile phone is the most useful invention. Because it makes people communicate with each other much more easily no matter how far apart they are, and we can get all kinds of information we need at any time with its help, it has greatly changed people's way of life.

【分析】首先明确题目要求：选择一项发明，说明它是最有用的并阐述理由。解题思路：1. 选取熟悉且实用性强的发明（如手机）；2. 围绕该发明的核心优势（方便沟通、获取信息等）组织理由；3. 使用正确的英语句式（如I think... Because...）清晰表达观点。
【解析】解题步骤：1. 确定要阐述的发明，如mobile phone；2. 说明选择它的原因，从沟通便捷性、信息获取便利性等角度展开；3. 用规范的英语句子连接观点和理由，确保表达通顺。
【答案】I think the mobile phone is the most useful invention. Because it makes people communicate with each other much more easily no matter how far apart they are, and we can get all kinds of information we need at any time with its help, it has greatly changed people's way of life.
【知识点】英语口语表达、发明话题阐述
【点评】本题为开放性口语表达题，考查学生围绕指定话题（发明的实用性）组织语言、表达观点的能力，需要学生具备一定的话题词汇积累和简单句运用能力。
【难度系数】0.6