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

更多内容推荐

• ——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.
• —I was ______ tired ______ I fell asleep as soon as I lay down. —Oh, you need to have a good rest.A．
• 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
• 草履虫的表膜不具有的功能是A．保护B．呼吸C．排泄D．消化-七年级生物
• Nina is clever but kind of lazy. If she _______ harder, she _______ better grades.[ ]A. will work; g
• 单细胞个体都很微小，跟人类没有任何关系。-七年级生物
• If he _____ free tomorrow , he ______ to see me .A．will be; will comeB．has ; comesC．is；will comeD．is
• ---“__________ 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
• I don’t know ______ he will come tomorrow. ______ he comes , I’ll tell you.A．if ; WhetherB．whether;
• Although he practiced______ those English words a lot, he ______ the pronunciation. A．read, finished
• The teacher with his students _____ playing _____football at this tine yesterday.A．was; theB．is;theC
• The Beatles began to be popular ______ in the USA.A.in the 1960s B. in the year1960 C. in 1960’s D.
• 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