Though the key was pressed, nothing ______ on the screen.A．appearedB．was appearedC．appearsD．is appea

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• They develop their skills _________ they can do things better and better.A．howeverB．becauseC．sinceD．
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• If it _____ rain, they will climb the hill. [ ]A. won't B. doesn'tC. isn't -七年级英语
• 草履虫体表的纤毛分布在[]A．全身的表膜B．体表一圈C．口沟内D．身体前段-七年级生物
• 下列生物属于单细胞生物的是（）A．海带B．蜗牛C．蚯蚓D．衣藻-生物
• 草履虫不具备下列哪个特点（）A．身体由一个细胞构成B．能在水中自由运动C．能对外界刺激作出反应D．有起支持和保护作用的细胞壁-七年级生物
• I don’t knowhe will come tomorrow,he comes, I will tell you.A．if; whetherB．whether; whetherC．whether
• 下列各项中，不属于单细胞生物的是（）A．病毒B．变形虫C．酵母菌D．草履虫-七年级生物
• 下列属于单细胞生物的是（）A．衣藻B．草履虫C．眼虫D．A.B.C都是-七年级生物
• The mountain was ______ steep ______ few people in our city reached the top.A．so; asB．so; thatC．as;
• Tomorrow is Sunday. Jim will go hiking with his friends if it ________.A．isn’t rainB．doesn’t rain C．
• I'll go camping with you, if I _____ free tomorrow.[ ]A. will be B. am C. shall be D. was -九年级英
• 眼虫和草履虫的身体由个细胞构成，具有精致和复杂的来完成各种生理功能。（2分）-七年级生物
• 变形虫喜欢生活在[]A．水流缓慢的小河B．水质比较清洁的小河C．池塘底部的淤泥以及烂叶中D．以上所有环境-七年级生物
• She will call you if she ____. A．goes toB．went backC．is coming backD．comes back-八年级英语
• 下列生物中属于单细胞生物的是A．蚂蚁B．大豆C．变形虫D．蚯蚓-七年级生物
• I don't know if Jack _____. If he _____, call me, please. [ ]A. will come; will comes B. comes;
• the movie star goes, there are lots of fans waiting to see her.A．WhateverB．HoweverC．WhereverD．Whoeve
• 用高倍镜观察变形虫细胞时，看到的细胞结构包括（）A.细胞壁、细胞核、叶绿体B.细胞核、叶绿体、线粒体C.细胞核、DNA、线粒体D.细胞膜、细胞核、细胞质-七年级生物
• Frank _____ to see his grandma if he _____ free tomorrow.A．will come ; will beB．comes ; isC．will com
• We’ll stay at home if it ______ this afternoon.A．rainB．rainsC．to rainD．will rain-八年级英语
• 下列生物中属于单细胞生物的是()A．草履虫B．大豆C．蚂蚁D．蚯蚓-七年级生物
• 草履虫将不能消化的食物残渣排出体外的结构是（）A．口沟B．肛门C．胞肛D．表膜-七年级生物
• 在条件适宜时，草履虫进行生殖的方式是（）A．产卵B．分裂生殖C．孢子生殖D．精卵结合-生物
• 草履虫是单细胞动物．______．-生物
• I don’t know if she _______ to the party. If she _______ , she’ll call me. A. will go, will go B. wi
• If you him the truth, you’ll prove how honest you are.A．tellB．will tellC．toldD．have told-八年级英语
• Mr. Green speaks very loudly all the people can hear him clearly.A. so thatB. when C. because-九年级英语
• 用所给动词的正确时态、语态或形式填空，将答案写在横线上。1. Mr Brown will go fishing tomorrow if it (not rain). 2. Kate (borrow)s
• The pupils will go to plant trees if ittomorrow. A. won’t rain B. doesn’t rain C. isn’t rain-九年级英语
• 下列选项中的生物属于单细胞生物的是（）。A．草履虫B．洋葱C．金鱼D．人-七年级生物
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• 请根据下图的实验来探究草履虫对刺激的反应：（8分）取三块载玻片，在每块载玻片的两端各滴一滴草履虫培养液，然后把这两滴培养液连通起来。在三块载玻片相同一侧的培养液中分别-七年级生物
• 下列属于单细胞生物的是（）A．衣藻B．水螅C．珊瑚虫D．水绵-七年级生物
• 关于草履虫的说法中，不正确的是()A．像倒转的草鞋底B．全身布满纤毛C．体长大约不到一粒芝麻的1/10D．生活在水流湍急的清水沟中-七年级生物
• Alice ________ to see his aunt if she _______free tomorrow. A．will come; will beB．come ; isC．will co
• We’ll go to the park ____________tomorrow.A．if it isn’t rainB．if it won’t rainC．if it doesn’t rainD．
• ---Look, what have they done? ---Sorry. I think if I __________ another chance, I’ll do it better. A
• —Will Mr Brown come to visit the company ?—We don’t know if he _______．If he ______，we’ll tell you．A
• If Ann ______ time tomorrow, she will go to the party. [ ]A. haveB. hasC. will have D. had-九年级英语
• Learn to think ________ we are young, or we may never learn.[ ]A. during B. when C. beforeD. after-九
• I am waiting for my friend. , I will go swimming alone.A．If he doesn’t comeB．If he won’t comeC．If he
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• 观察草履虫结构示意图，回答下列问题：（5分）（1）草履虫靠（）的摆动在水中旋转前进；（2）草履虫靠（）进行呼吸，摄入氧，排出二氧化碳；（3）草履虫的活动具有逃避食盐，趋向肉汁的规-七年级生物
• 草履虫具有比较复杂的结构，这是细胞分裂和分化的结果。（）-七年级生物
• 草履虫的运动靠的是下列哪种结构（）A．纤毛B．表膜C．口沟D．肛门-生物
• They ____________ having an argument at seven o’clock last night when CCTV ______ to broadcast news．
• I ______ along the road when I saw Peter. So we stopped and had a chat.A．walkedB．was walkingC．would