I don’t know ______ he will come tomorrow. ______ he comes , I’ll tell you.A．if ; WhetherB．whether;

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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
• 以下关于草履虫的知识，正确的是A．氧的摄入、二氧化碳的排出都通过伸缩泡完成B．个体微小，要用电子显微镜观察C．草履虫趋向有利刺激是反射活动D．观察时，放置儿丝棉花纤维的目-七年级生物
• 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
• We will have no water to drink _________ we don’t protect the earth.A. until B. if C. unless-八年级英语
• If it ______ tomorrow we'll go to the park. [ ]A. will not rainB. doesn't rainC. is not ra
• ____ are you going to be ____ you grow up?A．What, whileB．What, when C．When, how D．When, what-八年级英语
• ---How long have you been studying at this school? --- I have been studying here­­­­
• 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
• 为了验证草履虫能对外界刺激做出反应。明明做了这样一个实验（如下图）：在甲、乙两块载玻片两端各滴一滴草履虫培养液，并把两滴培养液连通，在右侧培养液的边缘分别放数粒食盐-七年级生物
• ----Have you seen Mr. Black these days, Jack? ----Yes, I met him when I ________ in the street yeste
• We will go to the mountains,if it______this Saturday.A．doesn’t rainB．won’t rainC．isn’t rainingD．didn
• 酿制甜酒要用一种微生物，它是单细胞酵母菌。-七年级生物
• I didn’t know when he back. He said he would call me when he home.A．will come; getsB．came; gotC．woul
• The children will climb the hill if it _____ tomorrow.A．won’t rainB．didn’t rainC．doesn’t rainD．isn’t
• ---So you were in the supermarket __________ you heard a strange sound, right?---That’s true. I ran
• Last night Dad and Mum didn’t come back home ________ I finished my homework.A．whileB．ifC．untilD．and
• --Did you see who the driver was?---No, the car ran so fast _____ I couldn’t get a good look at his
• 下列哪一单细胞生物没有运动能力？（）A．酵母菌B．草履虫C．衣藻D．变形虫-七年级生物
• While we _________, we saw a UFO land on a street. A．were shoppingB．shoppedC．are shoppingD．shop-八年级英
• It has been two years _________ he came to China. A．sinceB．afterC．beforeD．till-八年级英语
• – I don’t know if Mr. Li ____ to the party this evening.-- I think he will come if he ____ free.A．wi
• 下列动物中无运动器官的是A．鲫鱼B．蚂蚁C．草履虫D．家鸽-八年级生物
• We will go climbing _______ it ________ tomorrow.A．if, rainsB．if, will rainC．unless, rainsD．unless,
• He _______ you an e-mail as soon as he ________ a plan.A．sends; comes up withB．sends; will come up w
• 草履虫依靠尾部的摆动在水中运动。-七年级生物
• — I'm sorry that John is out. — Please ask him to call me as soon as he _____. [ ]A. returned B
• 使用显微镜观察草履虫时，经常在临时装片的培养液中放一些棉丝，其作用是（）A．限制草履虫运动B．增加营养C．便于计数D．增加温度-七年级生物
• You will have fun if you _____tomorrow.[ ]A. go hikingB. will go hikingC. went hikingD. are going hi
• --Would you like to go to the park with me?--I’d like to you don’t want to go alone.A．untilB．beforeC
• She was so angry at _______ he was doing ______ she walked out, and closed the door heavily behind h
• “Simon wants to know if the Class 3 students___ hiking tomorrow.”“Yes, but if it _____ , they’ll vis
• We’ll go hiking if it_________ rain tomorrow.A．won’t rainB． isn’t going to rainC．doestn’t rainD．don’
• I still remember my first teacher________ we haven’t seen each other for a long time.A．ifB．untilC．th
• 草履虫体内的食物残渣及二氧化碳的排出分别通过哪一组结构来完成的？（）A．口沟、表膜B．胞肛、胞咽C．收集管伸缩泡D．胞肛、表膜-九年级生物
• —Let’s go fishing if it _____ this weekend.—But nobody knows if it _______.A．is fine, will rainB．wil
• I don’t know if it _____tomorrow. If it ____, I will stay at home.A．will rain, rainsB．rains, will ra
• If our government _______ attention to controlling food safety now, our health _______ in danger.A．w
• 单细胞生物必须生活在水中。-七年级生物
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• —Shall we go out for a walk as soon as it __ ? —That sounds great.[ ]A. stops rainingB. rainingC. st
• 结合下图所示生物，回答问题（1）需借助来观察这些生物的内部结构。（2）它们都属于生物，A的名称是。B进行光合作用的场所是，C通过与外界进行物质交换。（3）上述生物中具有细胞壁-七年级生物
• You can’t play with your rabbit ______ you finish your homework.A．becauseB．whileC．afterD．until-八年级英语
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• 下图为草履虫结构模式图，请据图回答：（1）图中②为表膜，相当于细胞的。（2）图中标号①的名称是，该结构与草履虫的有关。（3）草履虫的遗传物质储存在图中标号所示的结构中。（4）一-八年级生物