When she was three years old, she_____ sing several English songs. [ ]A. may B. must C. can D. could

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• The weather in Kunming ______ never too hot ______too cold. [ ]A. is ; and B. is ; butC. gets; orD.
• ---________ you Kate? ---Yes, I ________. [ ]A. Are; am B. Are; is C. Is; are D. Is; am -七年级英语
• This pair of sunglasses ____ very expensive. [ ]A. is B. are C. paysD. does -八年级英语
• ---- Can I watch TV now? ---- No, you ________. You _______ do your homework first.A．can’t; can’tB．c
• —How much______the shirt? —______ thirty yuan. [ ]A. is; It's B. are; They're C. is; They&
• 人类生命活动中所利用的能量最终来自（）A．地球B．植物C．太阳D．食物-生物
• I'm sorry. I _______ go now. My classmate is waiting for me at the gate of the school. [ ]A. ca
• —Mary, _________ you play chess?— Yes, I can do it very well. I want to join the chess club. [ ]A. c
• —Must I finish my homework at school?—No, you _______. you can do it at home[ ]A. can't B. must
• This Christmas card must ______from Jim [ ]A. isB. wasC. beD. are-九年级英语
• — you drive a car? —No, I can' t.A．CanB．MustC．MayD．Would-七年级英语
• My sister's shoes ______ blue. [ ]A. amB. is C. areD. be-七年级英语
• 如图为一个池塘生态系统，请回答问题（1）水草、浮游等植物是生态系统中的______；鱼、虾等动物是生态系统中的______；还有一些我们看不到的生物它们是生态系统中的______（2）请-生物
• 下列关于生态系统的能量流动示意图中，正确的是（）A．太阳能→生产者→消费者→分解者B．太阳能→生产者→消费者→生产者C．D．-生物
• 如果将一条死鱼埋在地下，一段时间后发现鱼肉“不见”了，这是生态系统中（）的作用．A．生产者B．消费者C．分解者D．以上都不是-生物
• Last year I _________ drive. I used to take the bus.A．couldB．couldn’tC．shouldD．shouldn't-九年级英语
• —Shall we go to the beach, Amy? —Um, it ______ great. [ ]A. feels B. looks C. turns D. sounds -九年级英语
• Which pair contains the sound／／?A．other；thankB．Thursday；strengthC．thin；thisD．brother；healthy-九年级英语
• ----- I want to know if I _________ smoke here. ----- No, you ___________. Can’t you see the sign “N
• The skirt is made of silk. It ______ so soft, I like it. [ ]A. washes B. is washed C. is felt D. fee
• Look at my pictures, I took them in New York.They _____beautiful.[ ]A. lookB. soundC. readD. see-八年级
• —Must I finish my homework right now?—No, you.A. needn’t B. may not C. mustn’t-九年级英语
• 在一个池塘生态系统中属于生产者的是（）A．水草、浮游植物B．浮游动物C．植食性鱼类D．肉食性鱼类-生物
• 如图是表示生态系统中生产者、消费者和分解者之间的相互关系．（1）食物链和食物网是生态系统的结构基础．写出图中的一条食物链______（2）生态系统的物质循环是指组成生物体的物质-生物
• –Whose volleyball is this?–It _______ belong to Carol. She loves volleyball.A．mustB．mustn’tC．canD．ca
• ----Is that Henry?----No. He here. He has gone to Australia.A．may beB．mustn’t beC．can’t beD．might be
• -------May I take my pet dog with me into the cinema? -------The rule says no. So you ______.A．canB．
• Their number ______ smaller and smaller. [ ]A. is getting B. are getting C. will change D. will chan
• There________ some milk in the bottle. [ ]A. isB. areC. be -八年级英语
• 如图表示某生态系统中的食物关系，请据此回答下列有关问题．（1）请用“生产者”、“消费者”、“分解者”填空．从生态系统的成分看，图中的青草属于______；兔、鼠、鹰等动物属于____-生物
• 下列生物中不属于生产者的是（）A．银杏B．野草C．粮食作物D．蘑菇-生物
• 生态系统是由生产者、消费者、分解者组成的．______．-生物
• You ________ come tomorrow. I can do it myself.A．needn’tB．mustn’t C．can’tD．shouldn’t-九年级英语
• —____ you Kate Green? —No, my name _____ Mary Green. [ ]A. Is, am B. Are, is C. Are, am -七年级英语
• —Let's play volleyball. —That_____ interesting.[ ]A. may B. sounds C. be-七年级英语
• —It is fine, _______ play tennis.—That _______ good.[ ]A. let, sounds B. let's, sounds C. let&#
• 句子练习1. This is a pencil sharpener.(对划线部分提问)_______ _______？2. That is her phone number.（改为一般疑问句）____
• 生态系统中的能量流动的特点是（）A．循环流动，逐级递减B．循环流动，逐级增加C．单向流动，逐级增中D．单向流动，逐级递减-生物
• This is Miss Gao. She_____your new teacher. [ ]A. beB. am C. is D. are -七年级英语
• —Must I take much medicine every day?—No, you ________.A．mustB．mustn’tC．needn’tD．can’t-八年级英语
• 当动物以植物为食后，植物体内的能量就全部流入到动物体内．（）判断的理由：-生物
• — _______ do you go shopping with your mother?— I seldom do that.A．How oftenB．How soonC．How farD．How
• This pair of shoes ______ Li Gang’s ．It’s too big for him ．A．can’t beB．could beC．might beD．must be-九
• 人类排放的有毒物质进入生态系统，有毒物质是通过___________来传递和不断积累的。-七年级生物
• If I you, I'd be here earlier. [ ]A. was B. were C. am D. be -九年级英语
• It’s Sunday tomorrow, so you _______ get up so early. A．needn’t toB．need toC．don’t need toD．don’t ne
• 用所给词的适当形式填空。1. Mr Green _______ (be) his father.2. _______(this) are English maps.3. I don't kn
• 阅读下面材料，结合所学知识回答问题．材料（一）“太湖美，太湖美，美就美在太湖水”，然而，随着大量富含氮（N），磷（P）等元素的生活污水被排放进太湖，导致水体富营养化，湖内的-生物
• Chengdu _____ a beautiful place to live in. [ ]A. sounds B. sounds like C. sound like -八年级英语
• 如图1所示为一草原生态系统中狼、草类和兔子的数量关系图，请据图回答问题：（1）A代表的生物是狼，B代表的生物是______，C代表的生物是______．（2）实行退耕还牧政策之后，草原生-生物