This book _____ Tom's father's, because his name is on the book. [ ]A. maybe B. may beC. m

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• 吸气时外界空气进入肺的正确途径是（）A．口-＞喉-＞咽-＞气管-＞支气管-＞肺B．鼻-＞咽-＞喉-＞气管-＞支气管-＞肺C．鼻-＞咽-＞喉-＞支气管-＞气管-＞肺D．鼻-＞喉-＞咽-＞气管-＞支气管-
• 如图是呼吸系统组成示意图，请根据图回答：（1）既是空气的通道，又是食物的通道的结构是[______]______．（2）呼吸系统的主要器官是______．（3）我们平常所说的“痰”是在[______]
• 人体呼吸系统的组成是（）A．鼻腔和肺B．呼吸道和肺C．气管和肺D．呼吸道和气管-生物
• 人体呼吸系统的组成按顺序应当是（）A．鼻、咽、喉、支气管、气管、肺B．鼻、喉、咽、气管、支气管、肺C．鼻、咽、喉、气管、支气管、肺D．鼻、喉、咽、支气管、气管、肺-生物
• 世界人口不能无限增加，否则人类就不能正常生存，因为生物的生存需要[]A．空气B．阳光C．适宜的温度D．一定的空间-七年级生物
• 久置空气中的烤面包片，难以生出霉菌。这主要是什么因素影响了霉菌的[]A．温度B．光照C．空气D．水-七年级生物
• “万物生长靠太阳”。这句话表明影响生物生长的非生物因素有[]A．水B．温度C．土壤D．阳光-七年级生物
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• 下列不是植物、动物和微生物生存所需的共同基本条件包括[]A．营养物质B．阳光C．空气和水D．土壤-七年级生物
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• — Need I have a drive license to drive a car? — Yes, you_____or you might be caught and fined by the
• —Need I go there with you? — Yes, you _____. [ ]A. need B. mayC. must D. can -九年级英语
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• Someone is knocking at the door. It my mother. It's time for her to be back. [ ]A. can be B. ma
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• — Shall I tell John about it? — If I were you, I _____. He is a dishonest man. [ ]A. will B. won
• —How nice the building is! What is it used for? —It as a hotel. But I'm not sure. [ ]A. must be
• — Where is Tom? — He hasn't come to school today. I think he ______ be ill. [ ]A. has to B. sho
• — Look! The people are fighting over there. Let's go to stop them. — Can't you see? Many p
• —What ______ we do if we had a million dollars?— That's only a dream. [ ]A．must B．would C．will
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• You are too busy, so you keep any pets. [ ]A. ought toB. ought not toC. could D. should -八年级英语
• Don't go hiking alone here. You _____ get lost. [ ]A. can B. must C. may D. should-九年级英语
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• —Look! The man standing there is Mr Green.— It ______ be Mr Green. He has gone to England. [ ]A．can&
• Look out! The knife is very sharp. You _____ cut your finger. [ ]A. must B. need C. should D. may -八
• You _______ worry about him. He will get well soon. [ ]A. needn't B. can't C. mustn't
• 请据图回答下列问题：（1）对吸入气体有过滤，湿润和温暖作用的结构是图一中的[______]______．（2）图二中的b代表的物质是______，血液从毛细血管[4]______端流到[5]_____
• —Tom, where is your father? — I'm not sure. He ______ in his office. [ ]A. is B. may be C. mayb
• — Listen! There is a strange noise over there. — There _____ some dangerous animals. Let's run
• Though it's cloudy now, it ______ get sunny later.[ ]A. can B. mayC. mustD. need -九年级英语
• 句型转换。1. May I smoke here? (否定回答)No, . 2. Look! There is some milk in the glass. (改为否定句)Look! There m
• 如图是人体呼吸系统结构图（1）在横线上填出各部位名称．1．______2．______3．______4．______5．______（2）人体的呼吸系统由______和______两部分构成，其中能
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• 呼吸系统由呼吸道和______组成，后者是呼吸系统的主要器官，它是______的场所，呼吸道的作用是将吸入的空气变得______、______、______，减少对器官的刺激．-七年级生物
• — Daddy, I can see only a few stars in the sky. — Oh, my son. Many of stars ____ because they are to
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• 呼吸系统的起始器官是（）A．鼻B．咽C．口腔D．喉-生物
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• 血液经过肺循环后，其变化是（）A．由动脉血变成静脉血B．由含养料变成含废物C．由静脉血变成动脉血D．由含废物变成含养料-九年级生物
• 人体的呼吸系统是由______和______构成的．其中，气体交换的主要场所是：______，能对空气进行处理的是______．-七年级生物