题干

下列有关细胞呼吸原理应用的叙述中,正确的是

A:选用透气的消毒纱布包扎伤口,可以避免厌氧病菌的繁殖,从而有利于伤口的痊愈

B:稻田需要定期排水,如果稻田中的氧气不足,水稻根部会因细胞无氧呼吸产生大量的乳酸的毒害作用,而使根系变黑、腐烂

C:利用酵母菌和醋酸杆菌的无氧呼吸产物酒精和醋酸,可以制酒和酿醋

D:提倡慢跑等有氧运动,原因之一是人体细胞在缺氧条件下进行无氧呼吸,积累大量的乳酸和二氧化碳,会使肌肉产生酸胀乏力的感觉

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A

同类题2

阅读下面材料,在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

        While thousands of college students headed for warm climate to enjoy sun and fun during their week off from classes, seven local students had other plans.

        The Northern Essex Community College(NECC) students and one of their teachers spent part of their spring break in New York City, helping repair an area ____ (destroy) by the hurricane.

        “I wanted to see for myself what happened,” said Terry. “I couldn't imagine____it is like to lose your home and everything that you know and the____ (power) effect the hurricane had on thosepeople. I wanted to do something, to understand their feeling of helplessness.”

        The group headed into Brooklyn's RedHook district, which was hit hard by the hurricane. There they met people fromother parts of the country, ____had also volunteered to help. Together, thosevolunteers and the NECC students____ (work) to clear rubbish out of at hree-story building. They put on protective suits and gloves____they enteredthe building.

        Inside the building, the students saw nothing but broken walls and doors and pieces of the building   ____ (lie) all over the place.

The students returned to school with____sense of achievement, a feeling that____helped people in need. I was remarkable how a community lost so much and was still able to recover, and this left the deepest impression____thestudents.