单项选择。Which of the two pencils ______ yours? [ ]A．areB．is C．have D．has -七年级英语

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• My neighbor was like a cat on hot bricks before her driving test.A．very exitedB．sadC．relaxedD．very n
• It is impossible to please everyone. We can only do our best.A．hear…ofB．make… happyC．know… wellD．loo
• --Dad, can I go to the movies tonight?--Sure, but you ____ come back home before 9 o’clock.A．canB．mu
• There are no customers in the hotel. It ______ have the friendliest service.A．can’tB．mustC．mayD．need
• —Must I finish my homework today,Ms Liu?—No,_______. A.you mustn’t B.you don’t have to C.you can’t-九
• Many students said that they were willing to work hard to make their dreams _______ true.A. come B.
• There is going to ______ a school meeting this Friday. [ ]A. has B. be C. have -八年级英语
• 平武王朗自然保护区不仅有多种野生植物，还有大熊猫等到多种珍稀动物．（1）保护区内的绿色植物能进行光合作用，属于______．动物作为消费者，也起着着重要作用，如蜜蜂能帮助植-生物
• 单项选择。Don't ___ so excited. You must be calm (镇静). [ ]A. is B. are C. be D. am -七年级英语
• 单项选择。Mary and her father ______ in Beijing last month. [ ]A. was B. were C. are D. is -七年级英语
• .She rose from being a nobody to become a superstar. A.a famous person B. an unknown person C.an imp
• I didn't hear the phone. I _____ asleep. [ ]A. must be B. must have been C. should be D. should
• Though today is bright, it __ be rainy tomorrow.[ ]A. can B. isC. willD. must-八年级英语
• 此图生态系统中蛇的生命活动所需能量归根结底来源于（）A．鼠B．草C．兔D．阳光-生物
• --- Linda late for school. --- But she arrives on time at present.A．used to beB．used to beingC．is us
• 生产者和分解者之间没有任何关系______．-生物
• In ancient times, dogs were mainly ______helping people hunt( 打猎) .Now they are more useful-they can
• By the year 2015, all of China's museums will be free to enter. We_______visit anymuseum withou
• — You study ______ hard _______ you’re sure to pass the exam.— Thank you for saying so. A. enough… t
• — _____ Mary _____ Alice has joined the music club because they have no time.— It’s a pity! A. Both…
• — Mom, must I finish my homework now?— No, you ______. You may have supper first.A. mustn’t B. needn
• —________ do you like dogs?—Because they are very cute. A. WhatB. How C. Why-九年级英语
• Youhaveworkedallday. You_______betired.[ ]A. mustB. can't C.could D.might -九年级英语
• 生物圈中能保证各种生物生命活动正常进行的最基本的生物成分是（）A．绿色植物B．动物C．微生物D．高等动物-生物
• Even scientists ___ sure if there are UFOs. [ ]A. aren't B. don't C. can't-八年级英语
• 如图为渤海生态系统简化食物网结构示意图．请据图回答下列问题：（1）该食物网中的生产者是______，若要构成一个生态系统，图中需要添加的成分是______和______．（2）图示食物网中-生物
• 生态系统的生产者主要指动物．______．-生物
• I have two cats. One is black, and ______ is white.A．anotherB．someC．otherD．the other-九年级英语
• We ________ like to thank the honest boy.A．hadB．wasC．couldD．would-八年级英语
• 一个完整的生态系统由下列哪项组成（）A．非生物成分和生物成分B．水、阳光、温度C．生产者、消费者、分解者D．食物链和食物网-生物
• —Listen! Is Tom singing in the classroom?—No. It ____ be Tom. He has gone to Paris.[ ]A. may not B.
• I spent a lot of time ______ English last weekend.A. to practice speaking B. practicing to speak C.
• 在某生态系统的一些生物部分和非生物部分中，有阳光，绿色植物，虫和鸟，细菌等．请根据以上说明回答．（1）在这个生态系统中，生产者是______，消费者是______．（2）细菌的作用是-生物
• 单项选择。How far ____ it from Changchun to Shijiazhuang? [ ]A. be B. are C. isD. to be -七年级英语
• 单项选择。Mary with John ____ listening to the radio.[ ]A. is B. are C. do D. does -七年级英语
• About one third of workers in the factory _____ women. [ ]A. is B. are C. be D. am-八年级英语
• 蘑菇、小麦、蝗虫、燕子这些生物在生态系统中的成分依次是（）A．生产者、生产者、消费者、消费者B．生产者、生产者、分解者、消费者C．分解者、生产者、消费者、消费者D．分解者、-生物
• 选择填空。______ you interested ______ such a dangerous job? [ ]A．Do; in B．Are; in C．Are; with -七年级英语
• －Must we leave now?－No, we ________. We still have two more hours.A．can’tB．mustn’tC．needn’tD．shouldn
• —Another cup of tea?—No,thanks. I_______ be off. Gina is waiting for me.A. can b. must c. may-九年级英语
• 词形变化。1. Mr. Smith and his family _______ (be) in the park now. 2. Do you go _______ (fish) at the we
• 单项选择。Everyone ______ working hard in our school. [ ]A.am B.is C.are D.be -七年级英语
• 如图展示一片森林中常见的生物现象，请分析回答下列问题：（1）一片森林可以看做一个______，其组成包括了这一地域内的所有生物和______．（2）图中树皮里有昆虫的幼虫，那么昆虫幼-生物
• 生态系统的能量流动是伴随着下列哪项进行的[]A．生产者B．消费者C．分解者D．物质循环-八年级生物
• 虎、豹等大型食肉性动物，在种类和数量上均比其它动物少得多，造成这种现象的主要原因是（）A．它们的繁殖能力低B．栖息场所有限C．被人类大量捕杀D．在食物链中所处的营养级较高-生物
• 下列各种生物全部为生产者的一组是（）A．蘑菇、酵母菌B．芦荟、大肠杆菌C．水稻、海带D．蜘蛛、绵羊-生物
• 小李调查了某农田生态系统中的部分生物，绘制了如图．请据图回答：（1）该生态系统中属于生产者的有______．（2）图中所有的动物可统称为______．（3）农民投放灭鼠药后，该农田中老鼠-生物
• As we’re students, we __________ obey the school rules.A．canB．mayC．mustD．could-九年级英语
• －Look, your sister is playing the piano over there.－She ______ be my sister. She has gone to America
• —I can't give up smoking, doctor.—For your health, I'm afraid you _____.[ ]A. may B. can C