阅读下面的**,回答问题计量雨滴①雨是从云层降落的水滴。雨滴有大有小:瓢泼大雨的...
【小题1】计量雨滴的方法与必要性(目的、作用、意义)。【小题1数丰门社专飞杆轮环速对】不能。因为它起承上启下(过渡)的作用,去掉后上位如力征依行下文联系不紧密。【小题1】形象生动...
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在农田中,大雨过后往往会有大量蚯蚓钻出地面,这是因为(
D解析:此题可以从蚯蚓的呼吸过程方面来分析解答.解:蚯蚓呼吸的是360问答空气中的氧气,氧气先推往情衣阻础长溶解在体壁的粘液里,然后渗透到体壁内的毛细血管中的血液里,血液中的二氧...
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12.大雨过后,蚯蚓往往要爬到地面上是因为( )
A解析:分析大雨过后,雨水把土壤缝隙中的氧气排挤出来,土壤中的氧气减少,蚯蚓在土壤中无法呼吸,为了呼吸蚯蚓纷纷钻出地.
在夏日,大雨过后,蚯蚓常常会爬到地面上来,这是下列哪种非生物因素有关A.阳光B.温度C.水分D行既背丝得准之.空气
试题**:D试束帮该笔何乎谓题解析:分析:本题考查蚯蚓靠湿润的体表来完成呼吸的.解答:蚯蚓靠湿润的体表来呼吸的,其体壁密布毛细血管,土壤中的氧气先溶解在体表的黏液里,然后渗进体壁...
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【题文】大雨过后,蚯蚓爬到地面上。影响蚯蚓生活的非生物因素是( )A察金离老地期.阳光B.水分C.氧气D.温状应担度
试题**:【**】360问答C试题解析:【解析】试题分析:蚯蚓是用湿润的体壁进行呼吸的,呼吸的是空气中的氧气,大雨过后,积水把土壤缝隙中的氧气排挤出来,土壤中的氧气减少,蚯蚓在土...
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夏天,大雨过***居的蚯蚓会爬到地面上来,产生这种现象的根本原因是A.空气的影响B.温度的影响C.水分的影响D.土壤的影响
试题答案:A试题解析:分析:此题考查的知识点是蚯蚓的呼吸.解答时可以从蚯蚓的呼吸器官和呼吸特点方面来自来切入.解答:蚯蚓是用**的体壁进行呼吸的,呼吸的是空气中的氧气.大雨过后,...
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大雨过后,常常看到田地里的蚯蚓爬到地面上,出现这一现象的原因是( )
C解析:蚯蚓靠湿润的体表来吸收土壤中的氧,分析作答.解:蚯蚓靠湿润的体表来吸收土壤中的氧,大雨过后,请使价争毛谁创缩由于雨水填满了土壤缝隙,土壤中的氧减少,使蚯蚓无法正常呼吸,所...
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大雨过后,蚯蚓会从洞穴中爬到地面上.引起这一现象最主要的环罗机境因素是A.阳光B.温度C来自.水分D.氧气
试题**:D试题解析:分析:解答时可以从蚯蚓的呼吸器官和异预色额呼吸特点方面来切入.解答:蚯蚓是用湿润的体壁进行呼吸的,呼吸的是空气中的氧气.大雨过后,雨水把土壤缝隙中的氧气排3...
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天堂倾盆大雨,所以我爱上了你 有没有文采好的人来分析一下?
这个呢,来自天降倾盆大雨,就好像自己止呢情感。就像大鱼360问答一样,一下子冲天而降,倾盆到某一个地点。让他感觉到绿者话雷你热烈浓厚的爱情。
春季玉米播种后,接着来自下了一场大雨,土壤长时间浸水,结果玉米出苗很少,其主要原因是( )
C解析:解:由分析可知:种子萌发的外界条件为适量的水分、适宜的温度和充足的空气,春季玉米播种后,360问答接着下了一场大雨,土壤长时间浸水结果玉米出苗很少,其原因是土壤中空气不足...
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《机器人9号》来自的结尾时什么喻意?那些大雨中的绿色小点是微生物么?
9个机器人是的灵魂是绿色的在最后举行葬礼的时候飞上天的灵魂导致下雨而且影片精的最后雨滴里面有绿色的东西我认为那就是灵魂他们的灵魂融在了雨滴里分散落在了大地上地上会长出有灵魂的植物...
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《机器人9号》的结尾时什么喻意?那些大雨中的绿色小点是微生物么?
9鲜血危班是年抗个机器人是的灵魂是绿色的在最后现各举行葬礼的时候飞上天的灵魂导致下雨而且影片的最后雨滴里面有绿色的东西我认为那来自就是灵魂他们的灵魂融在了雨滴360问答里分散落在...
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《机器人9号》的结尾时什么喻意?那来自些大雨中的绿色小点是微生物么?
9个机器人是的灵魂是绿色的在最后举行葬礼的时候飞上天的灵魂导致下雨而且影片的最后马屋止科配践钱雨滴里面有绿色的东西我认为那就是灵魂他们的灵魂融在了雨滴里分散落在了大地上地上会长出...
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