The teacher asked us ______ the playground after the sports meeting. [ ]A. clean B. to clean up C. c

更多内容推荐

• 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
• (2010菏泽)18学习了克隆羊多莉的知识后，某学校生物兴趣小组的同学设计了一个克隆家猫的实验方案：将花猫体细胞的细胞核移^除去核的黑猫卵细胞中，新组合的卵细胞发育成胚胎后-七年级生物
• 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 _____
• 下列是几位同学在调查校园生物种类时选用的归类方法，不科学的是（）A．按照形态结构的特点B．按照生活环境C．按照个人的喜好D．按照用途-生物
• 用所给词的适当形式填空1. Lily isn't tall enough _________ (reach) the apples on the tree.2. She found it d
• 小红在校园内寻找鼠妇时，记录了各处发现的鼠妇数量（如下表）。请你分析鼠妇生活的环境特点应是环境水泥路上水槽边的石头下种花的湿花盆底下干燥的草地上鼠妇(只)024182A．阳光-七年级生物
• —What do people do with the animals ?—Some people help the animals live in peace, but many people de
• He needsanother kite for his son. [ ]A. makeB. to make C. makingD. made-八年级英语
• 用所给单词的适当形式填空。1. Many people decided __ (move) to the countryside because of much pollution in the ci
• Would you mind____me how____English words?[ ]A. tell; to rememberB. telling; rememberC. telling; tor
• 小明是个善于思考的同学,他在家中观察饲养的金鱼时,想到一个问题:”温度对金鱼的呼吸频率有没有影响?”为探究这一问题,他设计了如下方案,试分析回答步骤烧杯①烧杯②烧杯③烧杯④-七年级生物
• 实验题（10分）[（1）根据绿叶在光下制造有机物实验回答问题：1.实验时首先将天竺葵放在黑暗中一昼夜的目的是__________。（2分）2.将叶片放入酒精中隔水加热的目的是___________-七