Nelson Mandela is，__________ the greatest man of the 20th century，certainly among the most extraordi

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• 农业生产中需要施肥，肥料主要为农作物的生长提供（）A．有机物B．无机盐C．水D．氧气-生物
• 东北黑土地里种植的马铃薯块大、质优、淀粉含量高，说明黑土中含有充足的（）A．含氮无机盐B．含磷无机盐C．含钾无机盐D．含铁无机盐-生物
• --- Look，someone has left the fridge door open again．--- Well．It __________ me，Morn．A．isn’tB．won’tC．
• Only after Mary read her composition the second time _________ the spelling mistake.A．she noticedB．s
• 当根毛的细胞液浓度_____土壤溶液浓度时，根毛就吸水；当根毛的细胞液浓度____土壤溶液浓度时，根毛就失水，这就是给植物施肥过多会出现______现象的原因。-七年级生物
• In the dark forests _________, some large enough to hold several English towns.A．stand many lakesB．l
• , we would have caught the first bus.A．Had we got up earlierB．If we got up earlierC．Should we get up
• Not until he walked into the classroomthat he left his dictionary at home.A．did he findB．had he fou
• from the tenth floor when the policeman pointed his gun at him.A．Jumped down the burglarB．Down the
• (2013·淮安模拟)—I’m really depressed after so many failures. I can’t see any hope.—Cheer up! Behind eve
• 含钾的无机盐能够促使植物体（）A．枝叶繁茂B．幼苗良好发育C．茎秆健壮D．开花结果和种子成熟早-生物
• If _____ the same treatment again, he’s sure to get well.A．givingB．giveC．givenD．being given-英语
• 苹果树的“小叶病”和油菜的“花而不实”，其原因可能是分别缺少（）A．氯和铁B．磷和硼C．锌和硼D．磷和镁-生物
• about this computer program, a huge amount of time and energy.A．Should I know; be savedB．If I had kn
• In the dark forests______, some large enough to hold several English towns.A．lies many lakes B．lie m
• Only ________ as a translator ________ how important it is to understand foreign cultures.A．when did
• 无土栽培是栽培植物的新技术，青菜在无土栽培的培养液中也能茁壮成长。下列有关叙述中，不正确的是[]A．培养液的浓度大小不会影响青菜对水的吸收B．配制的培养液的主要成分与土-七年级生物
• The door burst open and____, shouting with anger． A．rushing in a crowdB．in rushing a crowdC．in rush
• I have tried very hard to improve my English. But by no means ___with my progress.A．the teacher isn’
• , the farmer continued working in the field.A．As tired he wasB．As he was tiredC．Tired as he wasD．So
• 日常生活中，我们常说的“无土栽培”是指（）A．把植物直接栽培在人、畜的粪尿中B．直接将植物栽培在水中的栽培方式C．不需要给植物施无机盐的栽培方式D．把植物栽培在植物需要的按比-生物
• 用以下三种水：1蒸馏水，2河水，3稻田中的水分别培养同样大小的番茄幼苗，一段时间后，幼苗的高度可能是（）A．1最高B．2最高C．3最高D．三者一样高-生物
• Hearing the bell ringing, out.A．rushing the children B．rushed the childrenC．were rushing the childr
• —Can I smoke here?—No, at no timein the library.A．permits smokingB．does smoking permitC．smoking is p
• ---Did you see clearly who the driver was? ---No, so quickly _____ that I couldn’t have a good look
• X、Y、Z是三个相邻的植物细胞，已知Z细胞液浓度>Y细胞液浓度>X细胞液浓度。下列各图中能正确表示三者吸失水关系的是[]A．B．C．D．-七年级生物
• It is no doubt that once ____ this city, you’ll find that there is so much surprise waiting for you
• ．— Flora has made much progress these days.— ________, and________.A．So has she; so you haveB．So she
• —Is there anyone in the classroom?—No, not only the students but also the teacherto watch the openi
• 关于土壤对植物体的作用，下列不正确的一项是[]A．为植物的生长提供有机物B．为植物的生长提供水分C．为植物的生长提供无机盐D．对植物起固定支持作用-七年级生物
• “庄稼一枝花，全靠肥当家”，下列对这句农谚的理解哪一项是不正确的（）A．只要有了肥，庄稼就能生长好B．“肥”是指植物的生长必需的无机盐C．它强调了“肥”对庄稼的重要性D．合理施肥-生物
• 玉米、水稻等农作物在开花时节，如果阴雨连绵，玉米、水稻等作物的子粒会出现空瘪，影响粮食产量，其主要的原因是[]A．光照不足，缺少营养B．下雨影响传粉C．下雨影响开花D．阴雨-八年级生物
• (2013·安庆模拟)So far, what we have done is destroying the earth; only by changingwe livewe save it.A．th
• — Did you know any French before you arrived in Washington?— Never ______ it, actually.A．had I learn
• 一次施肥过多，会造成水稻的“烧苗”现象，这是因为[]A．土壤溶液浓度过大，根无法吸水B．土壤温度太高C．水分太多，根无法呼吸D．土壤缺乏足够的营养-七年级生物
• 下列哪项不是含磷的无机盐在植物生活中的作用[]A．促进幼苗的发育和开花B．促进淀粉的形成和运输C．促进果实的提早成熟D．促进种子的提早成熟-七年级生物
• ________ we had read your letter _____the true state of affairs.A．It was until… that we understoodB．
• (2013·泰安模拟)Althoughto be the best in a recent science competition, the student remains modest.A．jud
• 种植白菜、青菜等叶类蔬菜，应适时适当多施[]A．含氮的无机盐B．含磷的无机盐C．含钾的无机盐D．含钙的无机盐-八年级生物
• 李倩给萝卜施肥时，施进了大量尿素，萝卜不容易成活的原因是[]A．土壤水分太多B．土壤温度太高C．土壤溶液浓度太高D．土壤空气太少-七年级生物
• 明明家种了很多蔬菜，比如白菜、西红柿等。请你根据所学的知识，帮助明明给家里的蔬菜施肥，分别多施的肥是[]A．氮肥、钾肥B．磷肥、钾肥C．氮肥、磷肥D．钾肥、氮肥-七年级生物
• at the news that his eyes rained tears.A．So was Tom sadB．So sad was TomC．So sad Tom wasD．So Tom was
• We got in my father's car and headed straight home and__________,I surely would have been stuck
• 下列哪种植物需要较多含氮的无机盐[]A．马钤薯B．花生C．青菜D．小麦-七年级生物
• 要使马钤薯和甘薯高产应当注意使用哪种无机盐[]A．含氮无机盐B．含磷无机盐C．含钾无机盐D．含硼无机盐-七年级生物