— I think the man over there must be Bob.— It _______ be him. He has gone to England.A．can’tB．mustn’

更多内容推荐

• 在生态系统中腐生性微生物和寄生性微生物分别属于（）A．分解者、生产者B．分解者、消费者C．生产者、分解者D．生产者、消费者-生物
• —______ I take the magazine away from the reading room?— No, you mustn’t. You ______ read it only he
• ---Must we donate our pocket money to the poor right now?---No, you _______. You can think it over a
• This summer holiday I did an English course which ________ for four weeks. [ ]A. lastsB. lasted C. w
• 下列属于生产者的是（）A．进行光合作用的植物B．动物C．微生物D．人-生物
• 如图是一个生态系统部分结构示意图，据图分析回答：（1）图中的太阳光、水、空气、无机盐都属于生态系统中的______成分．（2）细菌和真菌在生态系统中属于______．（3）请写出图中的捕-生物
• 生产者与消费者的区别在于（）A．生产者是以消费者为食的生物B．能否利用光能（或化学能）将无机物合成储存能量的有机物C．消费者是直接以生产者为食的生物D．消费者能利用现成的有机-生物
• 下列微生物在生物圈属于消费者的是（）A．枯草杆菌B．流感病毒C．蓝藻D．根瘤菌-生物
• — Must I feed the goldfish now? — No, you ______. But you must do it before supper.A．needn’tB．mustn’
• Sometimes we have much homework to do, but not often. Anyway, it ______in time.A．can finish B．should
• –Whose notebook is this? Is it Julie’s? –It _________be hers, she has gone to Beijing. A. mustB. mus
• --Have you decided where to go for your summer vacation? --Not yet. We_________ go to Mount Lu. It i
• Kate and I _____ good friends.[ ]A. areB. isC. amD. be-七年级英语
• My brother _______ eating spicy food now because he has had it for five years.[ ]A.used toB.is used
• There is going to _____ a meeting this afternoon.[ ]A. beB.holdC.openD.opened-八年级英语
• Jenny says she might _____ a doctor in the future.[ ]A. isB. beC. makes D. to be-八年级英语
• There a heavy rain in the north of China tomorrow. [ ]A. will haveB. will has C. will be D. be-七年级英语
• 植物是生物圈中的______者，动物是生物圈中的______者，大部分腐生微生物是生物圈中的______者．-生物
• 仔细观察图，填写有关内容：（1）该食物网共有______条食物链，请写出最长的一条食物链：______．（2）在该食物网中，生产者是______．-生物
• 生物可以利用的能量最终来源于（）A．植物B．动物C．土壤D．太阳-生物
• 下列有关生产者、消费者、分解者之间关系的叙述不正确的是（）A．生产者可为消费者提供食物和栖息场所B．消费者有助于植物传粉受精、种子传播C．分解者将动植物遗体分解成无机物又-生物
• 用助动词和情态动词do, does, don't, doesn't, is, am, are, be, can, can't填空1. —Does he have a ba
• —Let's play computer game.—That _________ good.[ ]A. is soundB. soundC. soundsD. is sounds-七年级英
• —_____yourfamilywithyouinChina?—No,theyareinAmerica. [ ]A. Is B. Do C. Are D. Does -七年级英语
• There's going to a film at the cinema this evening. [ ] A. beB. have C. beingD. having-七年级英语
• Red good luck. [ ]A. thinksB. meansC. looks D. hears-七年级英语
• 观察图，据图回答下列问题：（1）生态系统中，图中A是______者，B是______者．（2）从图中我们观察到生态系统中的分解者是______，它们把动植物的遗体分解成______、水和无机盐．（3-
• --______you swim? -- No, I can’t. A．CanB．MayC．MustD．Need-九年级英语
• –What _______ Amy going to buy for the trip?–She will buy some fish. What ____ we buy then? A．is; sh
• – Do you know whose book this is?—Let me have a look . It Wei Fang’s . Look, here is her name.A．can
• ---I argued with my best friend yesterday and I don’t know what to do now. ---Maybe you _______ say
• ____ theygood ____ theirfriends ?[ ]A. Do ,with B. Are ,at C. Are , withD. Do ,at-七年级英语
• -- _____ I ask you a question, Mr. Wang?-- Yes, you _______.A．Can, can’tB．Can, mayC．May, canD．May, m
• Good morning, Mr Smith! My name ____Jack. [ ]A. Is B. is C. are-七年级英语
• 湖泊生态系统中的草食鱼以水草为食，属于消费者；肉食鱼以草食鱼为食，应属于（）A．生产者B．消费者C．分解者D．消费者和分解者-生物
• 在生态系统中，能将有机物分解成简单的物质，供植物利用的是（）A．植物B．动物C．细菌D．阳光-生物
• 动物在生态系统中主要充当（）A．分解者B．消费之和分解C．消费者D．生产者-生物
• 下列做法中不正确的是（）A．农民在生态系统中扮演的角色是生产者B．食物链和食物网是生态系统的重要组成部分C．生态系统的功能是物质循环和能量流动D．生物圈是地球上最大的生态系-生物
• 在一块农田里，稻卷叶虫，蝗虫是危害水稻的害虫，青蛙是捕捉害虫的能手．那么，在这个生态系统中，这块稻田的水稻是______，其作用是______，蝗虫和青蛙是______，在这块稻田-生物
• 生态系统由______和______组成，其中植物在生态系统中扮演的角色是______，动物在生态系统中扮演的角色______，分解者是______．-生物
• 下列各项中，属于分解者的是（）A．水族箱中的金鱼藻B．金鱼的饵料水蚤C．潮湿阴暗处生长的苔藓D．朽木上生长的蘑菇-生物
• 初级消费者体内的能量其去路不包括（）A．用于自身生命活动B．被第二营养级所获得C．通过呼吸作用被消耗掉D．被分解者分解发散到环境中去-生物
• — My clothes are out of style.-—Maybe you should ______ some new clothes.A．buyB．boughtC．buyingD．boug
• there a bank near here?[ ]A.AreB. Is C. Am D. Be-七年级英语
• Mary, together with his parents, ______ going to visit Shanghai next month.[ ]A. wasB. isC. wereD. a
• Mr. and Mrs. Smith _____ busy _____ their housework. [ ]A. is, with B. are, with C. is, do D. are, d
• With the help of the new technology, you __ e-mail your friends by mobile phone.A．canB．mustC．needD．s
• 用am, is, are填空。1. I _______ Peter Hunt.2. My name _______Bill.3. I _______twelve.4. My family name__
• —I want to know if I _______________smoke here. —No, you ______________. Could you see the sign “ No
• 由于______流、______流和______流的存在，生物与环境才成为统一的整体．-生物