下列生物中，不是由细胞构成的是[]A．噬菌体B．细菌C．动物D．植物-七年级生物

更多内容推荐

• 一个多细胞生物体的所有细胞来自于[]A．细胞分裂B．细胞生长C．同一个受精卵D．细胞分化-七年级生物
• 下列属于生物的是[]A．恐龙骨骼B．木马C．小草D．钟乳石-七年级生物
• 壁虎遇到敌害会断尾逃脱，这一现象说明了生物[]A．能够由小长大B．繁殖后代C．对外界刺激会产生反应D．影响环境-七年级生物
• 下列除哪项外，都是生命特征的表现[]A．蜘蛛织网B．种子萌发C．森林起火D．月季开花-七年级生物
• Marydoesn'tlikeblue,sohermother____buysblueclothesforher.[ ]A.alwaysB.usually C.oftenD.never -七
• 句型转换。1. You can take the escalator to the second floor and get to the cafe. (对画线部分提问) Ithe second fl
• I ________ have a nap after noon.[ ]A. Some timesB. sometimes C. some time D. sometime-八年级英语
• 根据要求完成句子，每空填一词。1. He is never here. (改为反义句) He is _____ here.2. I like the novel by Smith. (把I改为Tony
• Jim was late for school at times last week. [ ]A. often B. never C. sometimes D. some times -九年级英语
• I ______ go to school by bike because I can't ride a bike.[ ]A. never B. something C. often D.
• I was doing the same job ___________, and I really feel exhausted. [ ]A. the whole time B. the all t
• Have you even seen him?A.before B. ago C. just now-八年级英语
• Sally has no time to visit her parents, but she makes telephone calls. She loves them so much.A. har
• –What do you think of Black Coal, Thin Ice?–It’s a good film., it is not suitable for teenagers.A．In
• — Zhang Lili, “the most beautiful teacher”, has moved us deeply. — Yes, and she is ______ popular wi
• It is raining very_______.A．heavyB．heavilyC．heavierD．more heavily-八年级英语
• It was very cold outside and we hadto go, so we had to stay at home .A．somewhereB．nowhereC．anywhereD
• We have to stay at home instead of going finishing because it is raining ________________.A．badlyB．
• ________, his new neighbor fell off his bike last week, and he was badly hurt.A．LuckilyB．LuckyC．Unlu
• 、This question is ______ easy, all the students can answer the question.A．too muchB．too manyC．much t
• --- The little girl dances so well. Where was she trained?-- She learns all by herself. She ______ g
• ---Where’s Mary? I didn’t see her this week.--- I didn’t see her, _____.A．otherB．tooC．eitherD．instea
• We talked _______ until Mr Wu asked us _______.A．happily, be quietB．happy, to be quietC．happily, to
• The sun is_____bigger than the earth. A．moreB．manyC．muchD．most-八年级英语
• The Internet is really useful to us. We can ________ find the information we need.A．slowB．slowlyC．ea
• The text is very easy for you. There are _____ new words in it.A．a fewB．a littleC．fewD．little-八年级英语
• How are you getting on with your work?—I can’t do it any longer. I’ll have to get help.A．carefullyB．
• Our garden is very beautiful, ____ in spring. A．speciallyB．especiallyC．mainlyD．nearly-九年级英语
• There are too many students asking teachers to help in the teachers’ office, but this room is ____ s
• ---______________ did you pay for the CD? ---Only nine dollars.A．How manyB．How muchC．How longD．How
• The dress is ________ expensive. I won’t have it.A．much tooB．too muchC．much moreD．more much-八年级英语
• ----May I borrow your pen, Mike ? ----Yes, of course. Here are some and you can take ______ of them.
• We shouldn’t watch __________TV because it is bad for our eyes.A．too muchB．too manyC．much tooD．many
• —_did he come?—He came to ask for help.A．HowB．WhenC．Where D．Why-九年级英语
• A smile costs nothing, but gives so ______.A．littleB．fewC．manyD．much-九年级英语
• -Is this factory ______ we will have a short stay?-Yes, it is in this factory ______ we will have a
• We have been to the village ____ they lived last year. [ ]A. whatB. when C. whereD. that -九年级英语
• 下列关于生物圈的叙述，不正确的是()A．生物圈是最大的生态系统B．生物圈是地球上所有生物及其生活环境的总和C．人类可以建造比生物圈更好的家园D．生物圈是一个统一的整体-七年级生物
• 下列哪一项不是“生物圈Ⅱ号”实验失败的原因？（）A．二氧化碳减少B．氧气减少C．水循环失调D．生物种类关系失调-七年级生物
• （4分）地球上所有生物共同拥有的家园是指________，这个家园包括________的底部、_________的大部和_________的表面三部分。-七年级生物
• 生物圈包括的表面，的大部和的底部。-七年级生物
• （6分）运用你所学的知识，完成下列一组填空：（1）地球上最大的生态系统是生物圈，它的范围包括、和岩石圈的表面。（2）植物的根生长最快的部位是根尖的区；植物吸收水、无机盐的主-七年级生物
• 请据图回答下列问题：（1）图1是某生态系统中四种生物数量直方图，若甲乙丙丁构成一条食物链，则可以表示为__________。（2）从四种生物的数量看，生产者是_____。（3）从丙和丁中分-七年级生物
• 不借助任何工具，可以生活在生物圈的任何圈层的生物是()A．哺乳类动物B．人类C．鱼类D．细菌类-七年级生物
• 人工栽培的生物群落一般以何种形式分布A．群聚分布B．随机分布C．均匀分布D．定向分布-七年级生物
• 下列属于最大的生态系统的是（）A．生物圈B．海洋生态系统C．湿地生态系统D．森林生态系统-七年级生物
• 生物圈中的大气圈、水圈、岩石圈是截然分开的．______．（判断对错）-七年级生物
• 下列对于生物圈的叙述中，不正确的是（）A．为生物提供阳光、水、空气等生存要素B．阳光不易透过深层海水，因此，生物圈不包括海洋C．地球上适合生物生存的地方叫做生物圈D．生物圈-生物
• 如图为草原生态系统中草原植被、鼠类和食鼠动物数量的变化关系，请根据曲线回答下列问题：（1）图中A代表______，B代表______，C代表______．（2）写出该生态系统的食物链______．（-
• 下列关于生态系统的说法，正确的是（）A．生态系统由生产者、消费者、分解者组成B．生态系统中的物质和能量都是循环的C．海洋是地球上最大的生态系统D．各种生态系统之间是有联系的-生物