Humans cannot breathe underwater because the oxygen in water (H2O) is bound to hydrogen and not available in a form our lungs can absorb. Fish breathe dissolved oxygen gas (O2) in water using gills, which can extract the oxygen because they have a large surface area (fish also have lower...
百度试题 结果1 题目Without( ), people can't breathe. A. oxygen B. gas C. water 相关知识点: 试题来源: 解析 A 句意:没有氧气,人们不能呼吸。结合常识可知,没有“氧气”人们将无法呼吸。故选A。反馈 收藏
Trees can produce oxygen for us to breathe.( ) A. take B. put C. make 相关知识点: 试题来源: 解析 C [解析] 答案C take意为带给;put意为放;make意为制造.结合句意,produce意为生产、产生.故选C 树可以产生氧气来供我们呼吸. 本题考察了同义词辨析...
百度试题 结果1 题目( )31. Without ___, people can't breathe.A. oxygenB. foodC. waterD. products 相关知识点: 试题来源: 解析 A 本题考查生活常识,答案为A。 人类呼吸需要氧气才能生存,而食物、水和产品虽然重要,但并非呼吸所必需。反馈 收藏 ...
百度试题 结果1 题目3. Human beings can't breathe without oxygen(oxygen). 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
19.Trees can produce oxygen for us to breathe.( ) A. take B. put C. make相关知识点: 试题来源: 解析 分析 树可以产生氧气来供我们呼吸. 解答 答案Ctake意为带给;put意为放;make意为制造.结合句意,produce意为生产、产生.故选C 点评 本题考察了同义词辨析反馈 收藏 ...
In the ecosystem, plants can ___ oxygen for animals to breathe. A. use B. give C. take D. need 相关知识点: 试题来源: 解析 B。植物在生态系统中能为动物提供氧气以供呼吸,give 有提供的意思,A 是使用,C 是拿走,D 是需要,均不符合。反馈 ...
Some plants can take in carbon dioxide (二氧化碳) we breathe out and give ___ oxygen to us.A:in caseB:in turnC:in returnD:in addition 相关知识点: 试题来源: 解析 C 结合句意,有些植物可以吸收“我们”呼出的二氧化碳,并给予“我们”氧气作为回报。in return “回报”符合句意。故正确答案...
Some plants can take in carbon dioxide(二氧化碳)we breathe out and give ___ oxygen to us. [ ]A. in case B. in turn C. in return D. in addition 相关知识点: 试题来源: 解析 C 反馈 收藏
Some plants can take in carbon dioxide (二氧化碳)we breathe out and give __ oxygen to us . A. in case B. in turn C.in return D.in addition C. in return 作为报答,返回来 相关知识点: 试题来源: 解析 解析:答案是 C in return 作为报答,返回来 ...