在观察草履虫时，为了限制草履虫的运动速度，应在载玻片的培养液上A．滴加肉汁B．放少量棉花纤维C．加少量食盐D．把水吸干-七年级生物

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• ——I don’t know if he ________ tomorrow?——If it ________ , he will come.A．will come; won’t rainB．will
• If I free next Sunday, I to the farm with you.A．will be, will goB．am, will goC．am, goD．will be, go-八
• My mother was looking while I the radio. A．listened toB．have listenedC．was listening toD．is listenin
• If you _______that kind of fish, you ________very sick.A．will eat; will becomeB．will eat; becomeC．e
• If it ______ tomorrow, I’ll go hiking with my friends.A．won’t rainB．will rainC．doesn’t rain D．rains-
• --- Don’t worry. Your mother is coming to help you. ---_______ she doesn’t come and I am here alone?
• 下图是在显微镜下观察到的草履虫结构示意图，草履虫运动和取食的结构分别是A．1和3B．2和6C．4和2D．4和3-七年级生物
• “探究草履虫对刺激的反应”实验所运用的科学探究方法是A．观察法B．调查法C．测量法D．实验法-七年级生物
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• 单细胞生物如草履虫对环境的变化没有任何反应。-七年级生物
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• ——Will you come to the dinner party?——I won’t come unless Mary ________. A．invitesB．will be invitedC
• He will show his new CD player to you as soon as he ____ his letter.A. finishes writing B. will fini
• She will call you if she ____.A. goes to B. come back C. comes back-八年级英语
• I have a lot of homework to do today, _________ I cannot go swimming with you.A．becauseB．soC．thenD．B
• ---What are you going to do this weekend ?--- Well, we’ll clean up the city parks ________ it rains.
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• 在草履虫培养液中加入适量碳素墨水，几分钟后将草履虫制成临时装片在显微镜下观察，被染成黑色的结构最可能是A．伸缩泡B．食物泡C．细胞质D．细胞核-七年级生物
• 用显微镜观察草履虫、眼虫和酵母菌，比较分析错误的是A．细胞中都没有叶绿体B．有的细胞中有明显的液泡C．都不是原核生物D．都能独立完成生殖-七年级生物
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• ---“__________ do you watch TV?”---“Every day.”A．How longB．How muchC． How oftenD．When-七年级英语
• Take an umbrella with you if it ______ tomorrow.A. rain B will rain C rains D is raining-八年级英语
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• The teacher with his students _____ playing _____football at this tine yesterday.A．was; theB．is;theC
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• 下列关于单细胞的叙述，错误的是A．整个身体由一个细胞构成B．能够完成呼吸排泄和对外界刺激发生反应等各项生命活动C．不能独立完成生命活动D．大多数在水域环境中生活-七年级生物
• The harder the workers work, _____.[ ]A. the more money they'll get B. they'll get them mo
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• 下图是某同学在显微镜下观察到的草履虫图像，则草履虫在临时装片上的状态是-七年级生物
• James with the Greens the White Tower Park if it tomorrow.A．are going to; isn’t rainyB．are going to;
• 单细胞动物虽然个体微小，但也有自己的运动器官。-七年级生物
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• We will climb the mountain tomorrow_it doesn't rain.A. if B. although C. since-九年级英语
• 将含有草履虫的池塘水置于烧杯中，不久就会发现草履虫都集中在水的表层，原因是草履虫需要（）A．阳光B．二氧化碳C．氧气D．养料-七年级生物
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