在设计“探究光对蟑螂生活的影响”实验时，下列条件的选择不同的是（）A．温度B．湿度C．食物D．光照-七年级生物

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• I'm hungry now. Let's stop _____.[ ]A. having a meal B. having a restC. to have a mealD. t
• I think it'll be a good way _____ to the theatre.[ ]A. by bus B. on a bus C. take a bus D. to t
• It is our duty_our hometown clean and beautiful. We must do something for it.[ ]A. to keepB. keepsC.
• Granny often tells us _______ water in our daily life.[ ]A. saveB. savingC. to saveD. saves-八年级英语
• Her parents are strict with her and they don't allow her __ out late. [ ]A. stayB. stayedC. sta
• The headmaster asked the pupils __ too late on weekdays. [ ]A. not get upB. not to get upC. don'
• 在“探究光照对黄粉虫生活影响”的实验中，正确的顺序是（）。①提出问题②制定计划③作出假设④实施计划⑤表达交流⑥得出结论A．①②③④⑤⑥B．⑥⑤④③②①C．①③②④⑤⑥D．①③②④⑥⑤-七年级生物
• The teacher asked us ______ the playground after the sports meeting. [ ]A. clean B. to clean up C. c
• 当苹果从树上掉下，砸到牛顿时，牛顿心里想：“为什么苹果会往下掉，而不往上飞呢？”，这是科学探究中的哪一步骤？（）。A．提出问题B．得出结论C．作出假设D．实验-七年级生物
• 在科学研究和社会调查中，常采用五点取样法，正确的五点取样法是（）-七年级生物
• March is the best time_______ China.[ ]A. visitB. visits C. to visit D. visiting-八年级英语
• 用所给词的适当形式填空。1. Please ask the children_________( not play) in the street．2. Let's ________ (rid
• I don't know when it is the right time _____ the meeting.[ ]A. to leave B. leave C. leave for D
• 为了研究“唾液及牙齿的咀嚼”对淀粉的消化作用，某同学设计并完成了下列实验方案，然后将4支试管放到37℃温水中5分钟，取出后分别加入2毫升的碘液，摇匀，观察试管中的颜色变化-七年级生物
• —Don't forget _____ my dog, OK?—OK.[ ]A. feeding B. to feedingC. feed D. to feed-八年级英语
• The man followed the boy _________ what he wanted _________ in the small room.[ ]A. to see; to do B.
• My mother asks meTV before finishing my homework. [ ]A. not to watch B. not watch C. not watching-八年
• Would you like ______ Chinese stamps?[ ]A. collectB. to collectC. collectingD. collected-八年级英语
• （每空2分，共8分）“探究影响鼠妇分布的环境因素”是我们学习生物学的第一个探究实验，通过实验，让同学们了解探究实验的一般过程，体会控制变量和设计对照实验的重要性。请你根-七年级生物
• (6分〉请你根据进行“光对鼠妇生活的影响”探究活动的体会，认真回答下列问题：（1）提出的问题是。（2）作出的假设是。（3）探究过程中，实验的变量是。为了保证实验结果的不同只能是-九年级生物
• Withlessthan10minutesleft,thestudentfounditdifficult _____ theirwritingontime.[ ]A.finishingB.finish
• It's difficult_____ this work.[ ]A. do B. does C. didD. to do-八年级英语
• 用所给词的适当形式填空。1. Some people are making rice dumplings_____ (celebrate) this holiday.2. People _____ (
• ㈠春天的时候许多同学都会养蚕，那么多的蚕宝宝养在一起，它们之间是否是一个具有社会行为的群体?为什么?(4分)㈡实验探究(11分)蚯蚓是常见的一种动物。请根据所学知识回答下-八年级生物
• —Hi, Julie. Let'sgoout _______. —Sorry, there _______ alotofhomeworkformetodo. [ ]A. play; are
• —What do you want to ________when you are older? —A reporter.[ ]A. areB. is C. be-八年级英语
• My teacher asked me a speech in front of the whole school next week.[ ]A. giveB. gaveC. to giveD. gi
• The doctor tried his best _____ the boy's life.[ ]A. savingB. to saveC. saveD. saved-八年级英语
• 基本语法1. I think Erin should tell her friend Anna not __________ (be) late for class again.2. ________
• 去年春季西南五省发生世纪大旱，为掌握旱灾对粮食生产造成的损失情况，应采用的方法是A．模拟实验B．调查法C．实验法D．观察法-七年级生物
• 被誉为“水稻杂交之父”的是（）。A．李时珍B．孟德尔C．达尔文D．袁隆平-七年级生物
• It is really kind_______ you_______ help me with my math.[ ]A. for; forB. to; to C. of; to D. for; t
• ________ is easy ________ the question.[ ]A. That, to answerB. That, answering C. It, to answerD. It
• (2010日照)3.科学家把美洲拟鲽抗冻蛋白质基因转入西红柿，成功培育出了抗冻西红柿。科学家把上述基因转入西红柿所利用的生物技术是A．组缎培养B．嫁接技术C．发酵技术D．转基因-七年级生物
• 以下哪种方法是科学探究的基本方法（）A、调查法B、观察法C、实验法D收集和分析资料法-七年级生物
• —Don't forget __________ your homework, John. —OK. I'll do it right now. [ ]A. doingB. doC
• He found itdifficult______others with English.[ ]A. helpB.to helpC. helpedD. to helping-八年级英语
• 用所给单词的适当形式填空。l. It takes my mother an hour_____ (listen) to music. 2. Emily _____(not take) the trai
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• Sorry, I forgot_____ a pen. May I use yours?[ ]A. buyB. to buyC. buying-八年级英语
• Are you sure people can live _____ more than 150 years old?[ ]A. to last B. to reach C. to be D. to
• Jimmy would like ______ in bed rather than_____ to the concert. [ ]A. to lie ; wentB. lying ; goC. t
• 在研究光对鼠妇生活影响的实验中所用鼠妇的数量应该是A．一只B．两只C．三只D．十只以上-七年级生物
• 某同学设计了一个探究“蛆是从哪里来”的实验，正确的探究过程应该是（）①作出假设②实验（设计实验和完成实验）③提出问题④根据实验得出结论⑤与他人交流和合作A．①②③④⑤B．③②①④⑤C．②③①⑤-七年级
• Mr. Li told his children _____around the house.[ ]A. walk B. walkingC. walkedD. to walk-八年级英语
• Just before the Chinese class, I suddenly realized that I forgot ______ my Chinese text book. [ ]A.
• 当实验结果不符合假设时，应该怎么做A．放弃实验验不再探讨此问题B．修改实验数据C．重新提出假设再进行实验D．不再做此实验直接得出结论-七年级生物
• He needs ______ you some questions.[ ]A. askingB. asksC. askedD. to ask-八年级英语
• Be carefulthe street when the traffic light is red.[ ]A. don’t crossB. not crossC. not acrossD. not
• 用所给词的适当形式填空。1. They hope_____ (visit) China again.2. We won't begin the meeting until he _____