《2025年通城学典初中英语阅读组合训练七年级下册江苏专版》

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范畴：人与社会 主题：发明创新 体裁：说明文 难度：★★★★ 建议用时：7分钟 评价：____/5
When we eat eggs, we usually throw away eggshells. But in a new study, a group of USA scientists from the University of Massachusetts, Lowell used eggshells to help damaged bones to get better.
The scientists first crushed eggshells and mixed them with other things. They then put the glue - like mix into a 3D printer to make small molds（模具）. The molds looked like small pieces of beehives（蜂窝）.
When they put cells of a person’s bones on these molds, to the scientists’ surprise, the cells grew very quickly. This is because there are many minerals in eggshells, such as calcium. The scientists said that these minerals could provide “food” for the cells. This allows bones to grow faster and become stronger.
If someone loses a bone, doctors can put the “eggshell bones” into the person’s body. Because they can grow from the person’s cells, and they will work better.
The scientists already tested the “eggshell bones” on mice. They worked fine. Also, thanks to 3D printing, scientists were able to create molds in different shapes. This makes it possible for our teeth to be repaired in the same way.
（ ）1. What can we infer about scientists from Paragraphs 2 & 3?
A. Scientists made molds by hand.
B. Scientists discovered eggshells are like glue.
C. Scientists grew cells on small molds.
D. Scientists put bones in eggshells.
（ ）2. The meaning of the underlined word “provide” is close to “________”.
A. choose B. give C. carry D. prepare
（ ）3. Why can eggshells help bones grow?
A. Because they can grow faster. B. Because they are very strong.
C. Because they are good for health. D. Because they have rich minerals.
（ ）4. What role does 3D printing play?
A. To help scientists use animal bones. B. To help scientists repair teeth quickly.
C. To make different shapes of molds. D. To make it possible to work on mice.
（ ）5. 创新考法·篇章结构题 Which of the following shows the structure of the passage?
A. B. C. D.

答案： 阅读理解
[B] C B D C A
本文主要介绍了美国科学家用蛋壳来帮助受损的骨头恢复。
1. C 推理判断题。根据第三段中的“When they put cells of a person's bones on these molds, to the scientists' surprise, the cells grew very quickly.”可知，科学家们把一个人的骨头细胞放在这些模具上时，惊讶地发现这些细胞生长得很快，由此推断，科学家们是在小模具上培植细胞的。
2. B 词义猜测题。句意：科学家们说这些矿物质可以为这些细胞提供“食物”。结合后句理解可知，这些矿物质所提供的“食物”使得骨骼生长得更快，变得更强壮，此处动词 provide 的意思是“提供”，跟 give 的意思相接近。
3. D 细节理解题。根据第三段中的 This is because there are many minerals in eggshells 可知，由于蛋壳中含有很多矿物质，所以它们能够帮助骨头生长。
4. C 推理判断题。根据最后一段中的“Also, thanks to 3D printing, scientists were able to create molds in different shapes.”可知，3D 打印帮助科学家们制造出了不同形状的模具。
5. A 篇章结构题。根据全文内容可知，第一段总起全文，介绍了来自美国的科学家运用蛋壳帮助受损的骨头恢复；第二、三段是并列结构，科学家把压碎的蛋壳和其他东西混合在一起，用 3D 打印机制作成模具，然后把人体骨头细胞放在模具上，蛋壳里的矿物质就会使骨头细胞快速生长；第四、五段是并列结构，医生和科学家把这些蛋壳骨头用在人体和老鼠身上做实验。故 A 项符合题意。