在生态系统中，能量是从固定_______开始的。-八年级生物

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• —Who's that woman with Ann?—I'm not sure. It _____ be her mother.[ ]A. mayB. can C. must-九
• —John, you_____ go out to play until your homework _____. —OK, Mum.[ ] A. must; finishes B. can'
• —Must I clean the room now?—No, you________ You can do it tomorrow[ ]A. mustn't B. mustC. needn
• 根据句意用 should 或 shouldn't 填空。1. You_________argue with your father any more.2. If you want to be
• 选出适当的词填空。1. A:I need some money. What _______ ( could; should) I do? B: You should get a part-time j
• Maybe you could __________[ ]A. call up him B. call him upC. called him upD. calling up him-八年级英语
• —Must I go with you?—No, you _____.[ ]A. needn'tB. shouldn'tC. mustn't D. can't
• —Is that computer engineer James King?—It _____him. I'm not quite sure. A. must beB. maybeC. ma
• —Will you _______ take part in theschool sports meeting next week? —I hope so. [ ]A. can B. be able
• You are too tired. Youhave a good rest.[ ]A. should B. canC. may D. shouldn't-八年级英语
• -Can you see the map on the wall?-Yes, __________.[ ]A. I doB. I canC. I amD. I can't-七年级英语
• —What's WeiHua doing this coming Sunday ? —I'm not sure. She_____ go to the country and se
• —Shall we take a taxi?—No, we . It’s not far from here.[ ]A. can’t B. mustn’tC. shouldn’t D. needn’t
• 句型转换。1. There will be more rain in 100 years.(改为否定句) There _______ _______ more rain in 100 years.2.
• I________rideabikewhenIwassevenyearsold.[ ]A.mayB.mightC.canD.could -七年级英语
• We'll _________ learn English well soon.[ ]A. canB. couldC. be ableD. be able to-八年级英语
• Marcia called me yesterday to tell me that she______ some Japanese. [ ]A. could speak B. speaks C. w
• The last train is left, soI _____stay here until tomorrow.[ ]A. mustB. have toC. stopD. live-八年级英语
• School students _______ smoke because it is against the school rules.[ ]A. needn'tB. couldn
• —You ______ turn on the light. It's bright enough here.—OK. I will turn it off right now.[ ]A.
• —Is that girl under the tree Mary?—No, that ______be Mary. She is in New York.[ ]A. canB. mustn’tC.
• 关于生态系统的能量流动，下列叙述中正确的是[]A．稳定的生态系统必须不断地从外界获取能量B．生态系统中的能量最终来自于太阳能C．生态系统的能量流动可以循环进行，提高能量的-八年级生物
• 下图是生物圈中碳循环的示意图，下列分析不符合图中表示的信息的是[]A．图中③表示的生理过程是呼吸作用B．能量沿着食物链流动，在丁这一级生物体内积累得最多C．图中甲代表的生-八年级生物
• The desk is not dirty. You _____clean it.[ ]A. mustn'tB. shouldn't C. needn't D. can&
• You _ be tired after playing sports for a long time without a rest.[ ]A. mustB. need C. can't-八
• You _____be tired after working for eight hours without a rest.[ ]A. canB. mayC. must D. need-八年级英语
• Schools allow students to do at least one hour's sports every day after school. [ ]A. wouldB. m
• You _____be careful next time. It is very dangerous to stay alone in the forest.[ ]A. mustB. canC. w
• —Can I go to the park, Mum?—Certainly. But you ______ be back by six o'clock. [ ]A. can B. may
• We ________fight against pollution.[ ]A. may B. shouldC.mustn't D. needn't-八年级英语
• 在生态系统的能量流动中，能量形式的转变顺序是[]A．光能→化学能→热能B．热能→光能→化学能C．化学能→光能→热能D．光能→热能→化学能-八年级生物
• — Have you heard that some bad thing would happen in 2012?— Don't worry! The news_____ be true.
• With the help of the new technology, you_____ e-mail your friends by mobile phone.[ ]A. canB. mustC.
• —I borrow your MP3? —Sure. Here you are! [ ]A. MayB. ShouldC. MustD. Would-八年级英语
• You look too tired. Yourest andwork too much.[ ]A. should; shouldB. shouldn't; shouldn'tC.
• You go and ask Meimei. Sheknow the answer.[ ]A. must, may B. must, stayC. need, can D. can, may-七年级英
• —Whoseisthepencilbox?—It__________beTom's.Lookathisnameonthecover![ ]A.canB.mayC.mustD.need -九年
• —Could you go to the beach with us this weekend?—I'm sorry I can't. I ______ study for the
• It’s too dark.I ________ go home.[ ]A. canB. have toC. needD. may -七年级英语
• Where is Jack ?Sorry, I don’t know. Go and ask his brother.He _____ know.[ ]A. can B. mayC. mustD. n
• 生态系统中，能量沿着食物链传递、逐级递减。[]-八年级生物
• —_______you speak French?—No, I can’t.[ ]A. Can B. MustC. May D. Should-七年级英语
• —Where is my English book?—__________ it's in your bag or it __________ in your desk.A. Maybe;
• —May I take the magazine out of the reading room? —No, you can't. You_____ read it here. It
• My sister is ill, and shestay in bed for several days.[ ]A. need B. mustC. has to D. has to be-八年级英语
• -Can he play the guitar?-_____, and he can play it well.[ ]A. Yes, he can.B. No, he can't.C. Ye
• —I have a fever.—You _____ drink lots of water.[ ]A. are B. should C. don't D. shouldn't-八
• Dan_______come to the ceremony tomorrow. I'm not very sure.[ ]A. mayB. mustC. should D. need-九年
• —Can I park my car here?—Sorry ! Youdo it. No parking is allowed here.[ ]A. may not B. don'tC.
• I wish I _____ be a doctor.[ ]A. canB. willC. amD. could-九年级英语