高考英语七选五练习|土豆茎做环保布料,附答案与语块

今天分享一篇环保科技类七选五真题改编，话题新颖、逻辑清晰，适合高中及基础较好的初中生练习。文末附完整答案、逐题解析、必背语块和做题口诀，建议收藏打印，做完再核对哦。

Making fabric from waste potato stems could offer a more sustainable alternative to pure cotton. __1__ The tubers are eaten, but the above-ground potato stem contains solanine and is poisonous, so farmers must remove it before harvest.

A U.K. start-up, Fibe, wants to avoid this waste by extracting fibers from potato stems. In April 2024, it introduced the world's first potato thread — a mixture of 75% cotton and 25% potato fibers. __2__

The approach began as a student project at Imperial College London. Tasked with designing a sustainable business concept, the group investigated waste plants. __3__ They are mass-produced worldwide and rich in fibers.

Fibe uses a non-biological process to extract the fibers. __4__ According to its internal analysis, potato fibers need 99% less water and produce 82% fewer carbon emissions, and require no extra land.

Expert Muhammad Tausif says demand for sustainable fibers is rising, but Fibe must prove its fibers match cotton in fineness and strength. __5__

选项：

A. Potatoes were an obvious choice.

B. However, challenges remain before it can scale up.

C. Potatoes pose a headache for farmers.

D. Once extracted, raw fibers are cleaned and graded into soft balls.

E. These qualities determine whether the fiber can become a real product.

F. This makes potato-based fabric far greener than conventional cotton.

G. The company aims to replace all cotton with potato fiber eventually.

一、词汇/短语

语块含义

make fabric from... 用……制作织物

waste potato stems 废弃土豆茎

a sustainable alternative to... ……的一种可持续替代品

pure cotton 纯棉

above-ground potato stem 地上土豆茎

contain solanine 含有龙葵素

be poisonous / toxic 有毒的

remove it before harvest 收获前将其清除

extract fibers from... 从……中提取纤维

a start-up 初创公司

potato thread 土豆纱线/线

a mixture of A and B A与B的混合物

non-biological process 非生物（化学/物理）工艺

carbon emissions 碳排放

require no extra land 不需要额外土地

match cotton in fineness and strength 在细度和强度上匹敌棉花

scale up 扩大规模（规模化生产）

二、七选五高频逻辑衔接词（必背）

因果/结果类：therefore, thus, This makes..., as a result, consequently

转折/让步：however, but, yet, nevertheless, challenges remain

指代衔接：These qualities / This（指代前文整句或名词）

选择/举例：an obvious choice, for example, such as

递进/目标：aims to..., eventually, ultimately, in the long run

三、环保主题万能表达

far greener than... 比……环保得多

need 99% less water 用水减少99%

produce fewer carbon emissions 产生更少碳排放

sustainable business concept 可持续商业理念

mass-produced worldwide 全球大规模生产

rich in fibers 富含纤维

四、做题口诀（七选五）

看代词（it / they / this / these → 找前文对应名词）

看逻辑（but/however 转折，so/this makes 因果）

看复现（同义词/近义词/上下义，如 potato ↔ tubers/stems）

看结构（段落首尾常是主旨句）

把这些语块记熟，环保科技类阅读/七选五会轻松很多 

答案解析：

1.C — 后文提到土豆块茎被食用，但地上的茎含有龙葵素有毒，农民必须在收获前去除，这说明土豆给农民带来麻烦（pose a headache），与C衔接自然。

2.G — 前文说推出了含25%土豆纤维的混纺线，接下来讲公司的最终目标（aims to replace all cotton with potato fiber eventually）顺理成章。

3.A — 前文说团队研究废弃植物，后文说它们全球大量生产且富含纤维，“Potatoes were an obvious choice”承上启下。

4 。F — 后文列出用水少99%、碳排放少82%、不需额外土地，说明这种面料比传统棉花环保得多（far greener），F衔接数据。

5. E — 前文说必须证明纤维在细度和强度上能匹敌棉花，这些品质决定它能否成为真正产品（These qualities...），E中these qualities指代fineness and strength。

今天这道七选五你做对了几道？把必背语块抄在积累本上，环保科技类阅读会轻松很多。