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请说明选择理由1.He made some new _________ in science.A.discovers B.discovered C.discovery D.discoveries2.Neither the students nor the teacher ________ the answer to the question.A.know B.knows C.don’t know D.doesn’t know 3.Mr.Jack _______ 解三角形：∠A=75°,∠C=45°,b=2 一个时钟的时针长6厘米,分针长8厘米一昼夜时针尖端走()厘米,分针尖端走()厘米 如图,在△ABC中,CE垂直AB于点E,DF垂直AB于点F,且AC平行DE,CE是∠ACB的平分线.求证DF平分∠EDB 初中英语怎样短时间提高啊 如何短时间提高初中英语成绩 英语底子太差 怎样在短时间内提高英语成绩 初中英语家教都应该教点什么呢?想短时间提高成绩. 2/3:3/4:4/5化最简整数比 5/3:5/4化成最简整数比是 3又1／4：2又2／5怎么化为最简整数比 初中英语中,什么时候使用过去完成时,什么时候使用过去式? 1.Not only_____good about helping other people,but _____to spend time doing what I love to do.A.I do feel ; I getB.do I feel ; get IC.do I feel ; I getD.I do feel ; get I请写出为什么,2.How about now?如何翻译?3.在问一个人怎么样的时 3/4：0.6,化成最简整数比5/4, 半年时间怎么样学初中英语 2.5;0.5化成最简整数比 初中英语的几点疑问,请您帮助回答,复习卷中有以下的题目还是不很清楚,以便下次不会再出现错误,1.There will be_______underground trains and_______pedicabs(三轮车)in Shanghai.A much.less B more.lessC more.fewer D 初中英语怎么读才能考及格 7小时15分=( )时 0时 15分减去7小时 在一组平行线上,共有K个点,连接这K个点能组成1309个三角形,请问K至少是多少? ：1.若两个三角形的两边和其中一边的高分别对应相等,试判定这两个三角形的第三边所对应的角间的关系（）A.不相等 B.相等 C.互补或者相等 D.互余2.若等腰三角形一腰上的高等于腰长的一半 补充题Gina isn't my sister .She's ( )friend.---That is my aunt.---What's( )name?This is Tony.( )is my brother.That（ ）Paul.（ ）is my brother.----Is this Jim?----No,it isn't（ ）Dave. One of my classmate_______Daniel and________ to clean the blackboard.A ask I B asks I C ack me D asks me这题特别不懂.请说明一下理由.用适当的介词填空.She swims ________ half an hour __________ the swimming pool ________her home. 一.写下列句子的同义句What's the weather like today?It rains cats and dogs.He is six feet in height.He was born twelve years old.There are many buses,cars,trucks and lorries. 初中英语阅读题~帮个忙啊~ 100分追加~The United States is full of cars.There are still some families whithout cars,but some families have two or even more.However,cars used for more than pleasure.They are a necessary part of life.Cars are 如果a个同学在2h内共搬了b块砖,则平均每人每小时搬多少块砖? 如果a个同学在b小时内搬砖100块,那么以同样的速度,x个同学搬100块砖需_____小时 急求水星、金星、火星、木星、土星、天王星、海王星和冥王星的公转速度和公转周期! 天王星外是海王星还是冥王星? 排列组合有34个人得奖.13个人得了化学奖 21个人得了物理奖 14个人得了生物奖,3个人同时得了三种奖,问.只得了一种奖的人有几个,只得了两种的人有几个 排列组合问题 6人围成一桌How many ways are there to seat six people around a circular table where seatings are considered to be the same if they can be obtained from each other by rotating the table