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B 热考内容 时事新闻
KEY→P5
范畴:人与社会 主题:发明创新 体裁:说明文 难度:★★★★ 建议用时:6分钟 评价:
Living in a house made of fungi(真菌) might sound like a story from a movie, but scientists are working to make it real!
Usually, people use cement(水泥) to build houses, but this can hurt the environment. It puts a lot of carbon dioxide(二氧化碳) into the air. This is bad for Earth.
A group of US scientists tried their best to make hard fungi for buildings. Fungi have something called mycelium(菌丝体). This helps fungi find food under the ground. Mycelium is usually supple, but scientists put special bacteria into it. These bacteria make calcium carbonate(碳酸钙). This hardens the mycelium. It's also what hardens eggshells.
Now, the new material can stay strong for at least a month. Scientists are still working to make it last longer, long enough to be used in building houses. If scientists can do it, we might use the hard fungi to build small houses.
（
A. To test the new idea from a movie.
B. To protect the environment better.
C. To cut down the price of buildings.
D. To take in carbon dioxide from the air.
（
A. huge B. dry C. dark D. soft
（
A. By adding eggshells into it.
B. By changing its material.
C. By putting bacteria into it.
D. By letting it grow for long.
（
A. Scientists made cement stronger by using fungi.
B. Building houses is bad for our environment.
C. Scientists are working on a new building material.
D. Scientists tried to know about a new kind of fungi.
KEY→P5
范畴:人与社会 主题:发明创新 体裁:说明文 难度:★★★★ 建议用时:6分钟 评价:
B D C C
/4Living in a house made of fungi(真菌) might sound like a story from a movie, but scientists are working to make it real!
Usually, people use cement(水泥) to build houses, but this can hurt the environment. It puts a lot of carbon dioxide(二氧化碳) into the air. This is bad for Earth.
A group of US scientists tried their best to make hard fungi for buildings. Fungi have something called mycelium(菌丝体). This helps fungi find food under the ground. Mycelium is usually supple, but scientists put special bacteria into it. These bacteria make calcium carbonate(碳酸钙). This hardens the mycelium. It's also what hardens eggshells.
Now, the new material can stay strong for at least a month. Scientists are still working to make it last longer, long enough to be used in building houses. If scientists can do it, we might use the hard fungi to build small houses.
（
B
）1. Why did scientists try to build houses with fungi?A. To test the new idea from a movie.
B. To protect the environment better.
C. To cut down the price of buildings.
D. To take in carbon dioxide from the air.
（
D
）2. What does the underlined word "supple" in Paragraph 3 mean?A. huge B. dry C. dark D. soft
（
C
）3. How did scientists make the mycelium hard?A. By adding eggshells into it.
B. By changing its material.
C. By putting bacteria into it.
D. By letting it grow for long.
（
C
）4. What is the main idea of the passage?A. Scientists made cement stronger by using fungi.
B. Building houses is bad for our environment.
C. Scientists are working on a new building material.
D. Scientists tried to know about a new kind of fungi.
答案
1. B 推理判断题。根据第二段中的“Usually, people use cement to build houses, but this can hurt the environment.”可知,人们通常用水泥来建造房屋,但这会破坏环境。由此推断,科学家们之所以尝试用真菌来建造房屋,是为了更好地保护环境。
2. D 词义猜测题。根据后文中的“These bacteria make calcium carbonate. This hardens the mycelium.”可知,这些细菌可制造碳酸钙,从而使菌丝体硬化。所以 supple 的意思是“柔软的”,跟 soft 的意思相近。
3. C 细节理解题。根据第三段中的“... scientists put special bacteria into it ... This hardens the mycelium.”可知,科学家通过把细菌放入菌丝体中使其变硬。
4. C 主旨大意题。通读全文内容可知,这篇文章主要讲述了科学家们正在研究一种新的建材。
2. D 词义猜测题。根据后文中的“These bacteria make calcium carbonate. This hardens the mycelium.”可知,这些细菌可制造碳酸钙,从而使菌丝体硬化。所以 supple 的意思是“柔软的”,跟 soft 的意思相近。
3. C 细节理解题。根据第三段中的“... scientists put special bacteria into it ... This hardens the mycelium.”可知,科学家通过把细菌放入菌丝体中使其变硬。
4. C 主旨大意题。通读全文内容可知,这篇文章主要讲述了科学家们正在研究一种新的建材。
