在探究湿度对鼠妇生活的影响实验中，在实验盒的一边放湿土，另一边放干土，这样做的目的是为了（）A．提供一种潮湿的环境B．便于观察鼠妇的活动C．控制实验的变量--光照D．设置对照-七年级生物

更多内容推荐

• — ______ do you go to the gym?— Twice a weekA．How oftenB．How soonC．How manyD．How long-七年级英语
• Tom is very short . So he sits _____the classroom .A．in frontB．in front of .C．in the front ofD．front
• —How wonderful you are playing the piano﹗do you practice it a week?—Twice. Practice makes perfect.A.
• —When did you have your school trip?—.A. In five days.B. Five days ago.C. For five days.-七年级英语
• 在探究“影响鼠妇分布的环境因素”的实验中，提出问题是：水影响鼠妇的分布吗？作出假设是鼠妇喜欢生活在潮湿的环境中．这需要在设计实验时，给鼠妇提供______和______两种环境，-生物
• This TV play is very interesting. Why down and watch it?A．don’t sitB．not sitC．not to sitD．not sittin
• --Mom, 1 lave done a good job in today' exam.--Wonderful! That’s a good .And you will do better
• —Who taught ______ English last year, Kang Kang? Was it Mr Huang?—Yes. I found _____ so funny to hav
• 探究“光对鼠妇生活的影响”时：（1）做出的假设是______．（2）该实验的变量是______，在设计实验时，要给鼠妇提供______两种环境，以便对照．（3）每个实验装置中放入10只鼠妇，每分钟-七
• 影响鼠妇生活的环境因素很多，如光、温度、水等，请你设计一个探究试验来探究“光会影响鼠妇的生活”．（1）你所提出的问题是：______？（2）你所作出的假设是：______．（3）你设计的探究-七年级生
• -Look! Who’sboy over there?-Oh,he is my cousin,Bob.He ishonest boy.A．a;theB．the;aC．the;anD．a;an-七年级英
• David Beckham has ______ children. Brooklyn Beckham is his ______ son.A．third, first,B．three, oneC．t
• 在温度适宜的条件下，我们在阴暗潮湿的地方，掀开石头、瓦片，常能看到鼠妇．请你设计一个实验，探究潮湿环境对鼠妇生活的影响．提出问题：______制定计划：（1）材料用具：若干只鼠-六年级生物
• 室温25℃～35℃、相对湿度在70%左右是霉菌生长繁殖的最佳条件．有些霉菌会产生对人体危害很大的毒素．厨房里贮存的食物、蔬菜及用具等，由于放置时间长或受潮，上面会长出绿色、黄-八年级生物
• - _____was the weather like there yesterday ? – It rainy .A．How , wasB．What , wasC．How , isD．What ,
• 同学们作了“光对鼠妇生活的影响”实验后，请回答下列问题：①根据实验，你提出的问是：______？②假使的提出与实验结果不符合时，应该怎么做？（）A．修正实验结果与假使相符合B．不再重-生物
• There is with my computer, so I can’t finish the work on time today.A．wrong anythingB．wrong somethin
• - Could you do ____ for me, please? Yes, with pleasure．A．somethingB．anything C．nothingD．Everything-八
• ----It’s kind _______ him to help me solve the problem.---- Yes, he is always kind ______ everybody.
• The students in Class 3 planned to sell old books to _______ money to help the new student.A．raise B
• 下面是一组同学在做“光对鼠妇生活的影响”实验．以下是他们的操作过程：先在盒子里铺上一层纸，纸是一边干一边湿的．把10只鼠妇放到了盒子的左边．然后盖上玻璃板，再在玻璃板的一-生物
• —I am tired these days. What should I do, Mum？—Have a good rest, eat more ______ and do more ______
• "_________do you play the piano?" "Twice a week. "A. How far B. How often C. How
• Mr. Yang wrote a_________story. Most of us enjoyed it a lot.A. two-thousand-wordsB. two-thousand-wo
• —_____ can you finish the task?—In two days.A. How oftenB. How farC. How soon-七年级英语
• 实验与探究：如果你翻动花园、庭院中的花盆或石块，常常会看到一些身体略扁、长椭圆形、灰褐色或黑色的小动物在爬行，这就是鼠妇，又叫潮虫．当你搬开花盆或石块，鼠妇很快就爬-七年级生物
• Hi! Tony. Your mother is waiting _____the bus stop .A．forB．atC．onD．to-七年级英语
• 激素对生命活动起着非常重要的调节作用．某同学为了探究“甲状腺激素对蝌蚪生长发育的影响”．制定了下列实验方案：第一步：取两个玻璃缸分别编号1号、2号．第二步：在两个玻璃缸中分-七年级生物
• 在探究“水分对鼠妇生活的影响”时，小明设计了如下四种方案，你认为最科学的方案是（）A．在干燥的纸盒内，左侧放潮湿的土壤，右侧不放任何东西．将10只鼠妇放在纸盒中央，观察鼠-生物
• If you have questions, you should ask the teacher _______ help.A．fromB．onC．forD．to-八年级英语
• —Life is limited. We had better _______ it on valuable things.—Good idea. And we should spend more
• It isn’t like a duck to water to learn a foreign language, so you must study hard.A．quickB．interesti
• When westerners go out to dinners, they usually pay for the bill with each other.A．go DutchB．pay for
• 鼠妇是一种甲壳纲的小动物，翻动花园、庭院中的花盆或石块，会看到它们很快地爬走了，是因为环境变亮了吗？我们展开实验探究：光对鼠妇生活的影响．（1）在这个实验中，要有效控制-生物
• We should have a light supper every day. Which of the following is correct for the underlined word
• Which of the following underlined parts is different in pronunciation from others?A．Don’t pick flow
• "I've made some coffee. Would you like_________?""That would be fine. "A. m
• The singers ______ many concerts in the countryside since 2001.A. hold B. held C. have held-八年级英语
• —Sorry, there’s______ coffee here. How about a cup of tea?—OK. That’s it. Thank you.A. littleB. fewC
• Mo Yan is one of the ______ writers in the world now.A. famousB. more famousC. most famous-七年级英语
• 鼠妇，也叫“潮虫”（见图），属于节肢动物．体呈椭圆形，长约15-20毫米，生活在陆地阴暗潮湿处，人们常在花园、花坛、山坡或草坪等处潮湿的花盆、石块或砖块下发现它．当人们移开-生物
• does Tom look like？A．WhatB．HowC．WhenD．Where-七年级英语
• 实验探究Ⅰ．探究：光对鼠妇生活的影响Ⅱ提出问题：______．Ⅲ作出假设：______．Ⅳ制定计划：（1）本实验中的变量是______．在设计实验时，给鼠妇提供了______和______两种环境，观
• Do you have ______________ to tell me?A．anything interestingB．something interestingC．interesting any
• 如果我们想证实温度对鼠妇生活有影响，那么下列叙述中正确的是（）A．实验中，光照是实验变量，土壤潮湿度、温度等条件相同B．实验中，温度、土壤湿度、光照等都是变量C．实验中，-七年级生物
• 根据探究光照条件是否影响鼠妇的分布实验装置，你认为正确的是（）A．光线对鼠妇生活的影响B．湿度对鼠妇生活的影响C．蚯蚓对环境的影响D．蚯蚓是怎样运动的-七年级生物
• （实验题）如果你翻动花园、庭院中的花盆或石块，常常会看到一些身体略扁、长椭圆形、灰褐色或黑色的小动物在爬行，这就是鼠妇，又叫潮虫．当你搬开花盆或石块，鼠妇很快就爬走-七年级生物
• If you’re late for class, Mr. Black will keep you out.A．won’t let you downB．won’t let you inC．will
• 探究“光对鼠妇生活影响”的实验如图，请回答：（1）该探究实验研究的变量是______；作为对照实验，设计了阴暗（乙组）和明亮（甲组）两种环境，其中______组是实验组．（2）作为本探究实-生物
• He goes to work by bus. Which of the following is correct for the underlined word in the sentence?A