The world's elderly population will exceedthat of children by 2060, when each group ________ to

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• 细胞学说的内容之一指出：一切生物都是由细胞构成的，正确吗？-高一生物
• Someone told me that the thief who was stealing in our shop last week _____ by the police. [ ]A. has
• Even though she _____ to hospital without delay, she would not have been saved. [ ]A. had rushed B.
• All visitors to this village ________ with kindness.[ ]A. treatB. are treatedC. are treatingD. had b
• The coal miners________in the coal mine for 10 hours before we came to their rescue.[ ]A．had trapped
• The hospital ________ well, where many wounded _________ every day. [ ]A. is operated, operation B.
• The river smells terrible.People must ________dirty things into it.[ ]A. be stopped to throwB. be st
• 细胞学说的建立说明了①植物细胞与动物细胞的区别②人们对细胞的认识是一个艰难曲折的过程③技术对科学发展有推动作用④科学发展是开拓、继承、修正和发展的过程[]A．①②③B．①②④C．①-高一生物
• The girl is very shy, and seldom speaks until she ________ to. [ ]A. is spokenB. is speakingC. speak
• 细胞学说的建立过程(按时间先后排序)是①从人体的解剖和观察入手②理论思维和科学实验的结合③显微镜下有重大发现④细胞学说在修订中前进[]A．①②③④B．①③②④C．③①②④D．③①④②-高一生物
• — The window must have taken you quite a lot of time that day.— You are right. They _____ for weeks.
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• At the end of the meeting,it was announced that an agreement.[ ]A. has been reachedB. had been reach
• Great attention must ________ education, especially in the countryside. [ ]A. be paid to developingB
• -There is________on smoking in this theatre.-Do you mean smoking________in this theatre? [ ]A．a ban；
• 细胞学说的内容不包括[]A．所有的生物都是由细胞组成的B．细胞由细胞膜、细胞质和细胞核构成C．所有的细胞必定是由别的活细胞产生D．细胞是所有生物结构和功能的基本单位-高二生物
• 下列科学家对细胞学说的建立作出了积极的贡献，其顺序正确的是[]A．维萨里、虎克、比夏、列文虎克B．维萨里、虎克、施莱登和施旺C．列文虎克、虎克、魏尔肖、施莱登D．维萨里、魏-高一生物
• 下列说法不正确的是[]A．细胞学说揭示了动植物细胞的统一性和多样性B．细胞学说是多位科学家在探索中开拓、继承、修正和发展后建立的C．将显微镜的低倍镜换成高倍镜后，一个视野-高一生物
• Months ago we sailed ten thousand miles across this open sea, which ________ the Pacific, and we met
• 细胞学说指出：一切动植物都由细胞发育而来。这个学说的科学价值主要是[]A．告诉人们所有的生物均由细胞构成B．证明了生物彼此间存在着亲缘关系C．说明了动植物的细胞是一样的D．-高一生物
• They would tell how the slaves _____on a ship to an American port on a rainy day. [ ]A. being brough
• — George and Lucy got married last week. Did you go to their wedding?— No, I _____. Did they have a
• At the end of the meeting, it was announced that an agreement ______.[ ]A. has been reachedB. had be
• The Water Festival __________ to be the most important celebration among the Dai People.[ ]A. says B
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• 细胞学说主要阐明了[]A．植物细胞与动物细胞的区别B．细胞的基本结构C．生物体结构的统一性D．细胞种类的多样性-高二生物
• 根据所缺单词的首字母或所给单词的汉语提示,在句子中的横线上写出各单词的正确形式.(每空一词)1. One hundred is d______________ by 25 is 4.2. Her pa
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• 下列属于细胞学说内容的是[]A．一切动植物都由细胞发育而来B．细胞是一个相对独立的单位C．新细胞可以从老细胞中产生D．细胞分为原核细胞和真核细胞-高一生物
• Months ago we sailed ten thousand miles across this open sea, which ________ the Pacific, and we met
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• English _____________ in more and more countries today.[ ]A. teachesB. teachC.was taughtD. is taught
• John had to have his house repaired because it ________ in the earthquake.[ ]A．damagedB．was being da
• 关于细胞学说的叙述，错误的是[]A．它揭示了动植物细胞的多样性B．建立者主要是施莱登和施旺C．它揭示了动植物的统一性和生物体结构的统一性D．是多位科学家在探索中开拓、继承、-高三生物
• The wet weather will continue tomorrow, when a cold front________ to arrive.[ ]A. will be expectedB
• I completely agree to your advice that children ______ with respect and encouragement. [ ]A. should
• —I hear Tom ______ playing games recently—______ no wonder he is easy to feel sleepy in class.[ ]A.
• Knowing how well he________ his future career,I feel confident that he will make a success.[ ]A. is
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• 下列哪项不是细胞学说的主要内容[]A．一切动植物由细胞及其产物构成B．细胞是生物体相对独立的单位C．新细胞可以从老细胞中产生D．细胞分为细胞质、细胞核和细胞膜三大部分-高三生物
• The leaders of the company are having a meeting to discuss where the new office building __. [ ]A. s
• Experiment of this kind _____ in both the U.S. and Europe well before the Second World War. [ ]A. ha