某同学探究“不同营养液对草履虫培养效果的影响”，实验设计如下表。下列对该实验改进建议不合理的是（）组别营养液的种类营养液数量营养液温度草履虫数量甲组稻草浸出液500毫升-七年级生物

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• -- When can I play computer games, Mum?--______ your homework _______.A．Until, finishesB．Not until,
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• 单项填空Chen Guangbiao says he ________ all his money to charities when he dies.[ ]A. leavesB. leftC. wi
• If your mother were here, she ______ allow you to surf the Internet for so long.A．won’tB．doesn’tC．di
• I don’t know if he________ to the park tomorrow. If he ________, I won’t go, either. A. goes, goes B
• If the weather ________ fine , she _________ to the countryside with her parents.A．is; will goB．is ;
• She asked if I ________ to Beijing tomorrow. If I ________, she will go with me.A．go; goB．go; will g
• I will stay at home and read books if it _______ tomorrow.A．is rainingB．rainsC．rainD．will rain-八年级英语
• 草履虫能完成许多生理活动。下列关于其结构和生理功能的对应关系不正确的是（）A．表膜——呼吸和排泄B．食物泡——消化食物C．伸缩泡——伸缩产生运动的动力D．胞肛——排出食物残渣-九年级生物
• You’d better wear a pair of comfortable trainers when ________a long walk. A．you takeB．takingC．to ta
• 下列关于单细胞生物的叙述中，不正确的是A．不能完成呼吸、生殖等复杂的生命活动B．能够独立生活C．能够趋利避害、适应环境D．整个生物体只有一个细胞构成-七年级生物
• While I _ a Zhengjian Evening Paper inthe sitting room, the doorbell rang.[ ]A.was readingB.readC.is
• 下列生物中，只能通过电子显微镜才能观察清楚的是：A．酵母菌B．变形虫C．细菌D．病毒-八年级生物
• --I want to know when Mr. Brown will arrive.--When he , I will tell you. A. will arrive B. arrived C
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• We will invite Mr Li for dinner if he _____to our school this afternoon.[ ]A. came B. will come C. c
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• 生物兴趣小组的同学在培养草履虫时发现，草履虫常集中在培养液的表层，原因是培养液的表层A．氧气充足B．阳光充足C．营养丰富D．温暖-七年级生物
• 下列属于单细胞真核生物的是（）A．青霉B．蘑菇C．酵母菌D．噬菌体-八年级生物
• 草履虫的运动是依靠()A．伸缩泡伸缩B．食物泡流动C．细胞质流动D．纤毛摆动-七年级生物
• While I _______ TV in the sitting room, the bell _______.A．watches, ringsB．watched, rangC．was watchi
• 把含有变形虫的池水放入烧杯中，不久变形虫就会聚集在水的上层。这是因为它们需要（）。A．充足的氧气B．充足的阳光C．充足的养料D．较高的温度-七年级生物
• - How will you spend your weekends?-If I ______free, I ______ to the cinema with my friends. [ ]A. w
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• The mountain was ______ steep ______ few people in our city reached the top.A．so; asB．so; thatC．as;