下列哪项是动物在自然界中的作用[]A．动物在维持生态平衡中起着重要作用B．动物能促进生态系统中的物质循环C．动物能帮助植物传粉，传播种子D．以上都是-八年级生物

更多内容推荐

• 短文改错。 此题要求改正所给短文中的错误。对标有题号的每一行做出判断：如无错误，在该行右边横线上画一个勾（√）；如有错误（每行只有一个错误），则按下列情况改正： 该行多一-高三英语
• She begins her life in a strange land,learning to navigate the distance between the old world and he
• Jack, please stop talking. It's bad _____ to talk with others when having dinner. [ ]A. habit B
• 单词拼写。1. She had many ________ (失败) before finding the right method. 2. After ten years of ________ (
• 单词拼写。根据下列各句句意和空白之后的汉语提示词，在横线上写出空缺处各单词的正确形式。（每空只写一词） 1. Spring has come, and the trees are thick with
• 短文改错。 假如英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改-高三英语
• I want your_________, sir. I don t know what to do.[ ]A. advices B. piece of advicesC. advice D. adv
• 短文改错。 假如英语课上老师要求同学们交换修改作文，请你修改你同桌的以下作文。文章共有10处语言错误，要求你在错误的地方增加、删除或修改某个单词。增加：在缺词处加一个-高三英语
• 短文改错。 假如英语课上老师要求同学们交换修改作文，请你修改你同桌的以下作文。文中共有10 处语言错误，每句中最多两处。错误涉及一个单词的增加、删除或修改。 增加：在缺-高三英语
• Father went to his doctor for _____ about his hearing trouble. [ ]A. an advice B. advice C. advicesD
• He is____as a leader but he hasn't____ inteaching.[ ]A. success; many experiencesB. a success;
• food are needed.[ ]A. Quantities of B. Mass of C. A large amount ofD. Lots of-高二英语
• 单词拼写。1. I have many ________ (亲戚) living in Shanghai. 2. She ________ (弯腰) to pick up her wallet jus
• 单词拼写：根据句意和提示写出所缺单词。1. The musicians were to play __________ (玩笑) on each other as well as play music
• My English teacher gave me________ how to learn foreign languages. [ ]A. advice on B. some advices o
• 短文改错 假定英语课上老师要求同桌之间交换修改作文, 请你修改你同桌写的以下作文。文中共有10处语言错误, 每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。-高三英语
• 单词拼写。1. Children can't compare with a______ in strenghth. 2. As you a______ the town, the first
• It took me a few weeks to get used to the new_____.[ ]A. surround B. surrounding C. surroundsD. surr
• 短文改错。 假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多两处。错误涉及一个单词的增加、删除或修改。 增加：-高一英语
• 单词拼写。根据下列句子及所给汉语注释，在相应题号的横线上写出空缺处各单词的正确形式。（每空只写一词） 1. Several famous______(女演员) were invited to the
• John is a man of much _____ and he had a lot of interesting _____ in his life. [ ]A. experience; exp
• Please tell us about your _____ in China. [ ]A. experiences B. experience C. experienced D. being ex
• We had already read the _____before we operated the machine. [ ]A. introduction B. direction C. expl
• 下列生物与仿生学的对应中，错误的是：A．蜻蜓与直升飞机B．蝙蝠的回声定位与雷达C．萤火虫与冷光D．乌龟与防震帽-八年级生物
• 短文改错。Dear Abby, How are you? Today I’ve got a wonderful news to tell you. I have offered a scholarsh
• My father gained his _____ by printingof some famous writers _____in the world.[ ]A. wealth; workB.
• 短文改错。 此题要求改正所给短文中的错误，对标有题号的每一题做出判断： 如有错误（每行只有一个错误），则按下面情况改正：此行多一词：把多余的词用斜线（＼）划掉，在该行右边横-高三英语
• Although the town had been attacked by the storm several times，________was done.[ ]A．a few damagesB．
• 下列关于动物和人类关系的说法中,不正确的是()A．动物可提供肉、蛋、奶等食品B．人类部分衣物的原料来自动物C．所有贵重的药材都来自动物D．有些动物可供人们观赏和娱乐-九年级生物
• Spelling. 1. She hadn't read the letter and so was unaware of its c______.2. U______, my comput
• 下列有关哺乳动物与人类关系的叙述中错误的是（）A．有些能为人类提供肉食和毛皮B．有些能为人类提供中药材C．对人类都是有利的一面D．有些能为人类提供娱乐．观赏等-八年级生物
• 科学家模仿动物的某些结构和功能来发明创造各种仪器设备，这就是A．生物反应器B．仿生C．仪器制造D．学习行为-八年级生物
• It is _____ to jump into the swimming-pool to have a swim after a day of study. [ ]A. funny B. stran
• The water _____ cool when I jumped into the pool for morning _____. [ ]A. was felt; exercise B. felt
• 短文改错。 假如英语课上老师要求同学们交换修改作文，请你修改你同桌写的以下作文。文中有10处错误，要求你在错误的地方增加、删除或修改某个单词。增加：在缺词处加一个漏字-高二英语
• 短文改错。 此题要求改正所给短文中的错误。对标有题号的每一行作出判断：如无错误，在该行右边横线上画一个勾(√)；如有错误（每行只有一个错误），则按下列情况改正： 此行多一-高三英语
• With so many people ____ in English, it will become more and more important to have ____ of English.
• He has made ________ that we are proud of him. [ ]A. so rapid progressB. such a rapid progress C. su
• 下列关于仿生例子的叙述错误的是A．模仿蝙蝠的回声定位——雷达B．模仿萤火虫发冷光——日光灯C．模仿乌龟的背甲——薄壳建筑D．模仿青蛙的游泳姿势——蛙泳-九年级生物
• 改错题。Christie was one of my best friend at high school At that time, we often spend time together. Th
• 目前最理想的乳房生物反应器，是通过改造动物的什么而获得的A．细胞的大小B．遗传基因C．外部形态D．生理特性-八年级生物
• Would you please _____ for her? She won't get off until we get to the last stop.[ ]A. make room
• To have enough nourishment(营养), you'dbetter have different kinds of____.[ ]A. dietB. eatingC. f
• 单词拼写。1. Spring has come, and the trees are thick with green ______(叶子). 2. Taiwan is ______(分隔) from
• 下列关于仿生例子的描述中，错误的是（）A．模仿萤火虫发冷光──日光灯B．模仿蛇类感知热量的来源──响尾蛇导弹C．模仿青蛙的游泳状态──蛙泳姿势D．模仿肾脏的功能──血液透析机-九年级生物
• It _____ whether you will come to the meeting or not this evening. Which of the following answers is
• 单词拼写。1. This kind of film is suitable for both children and a. 2. I intend to give up my present pos
• 短文改错。Dear Abby, How are you? Today I’ve got a wonderful news to tell you. I have offered a scholarsh
• 雷达的回声定位功能是模仿哪种动物的本领A．青蛙B．蝙蝠C．鸟D．蝗虫-九年级生物
• It took us quite a long time to get to the amusement park. It was _____journey.[ ]A. three hour B. a