细胞膜系统的边界

怎么样使得一个密封很久的玻璃瓶塑料盖打开呢 怎样打开装有热水的玻璃瓶盖呢?用工具（除了起子撬开……）Brain Storm! 实验玻璃瓶盖怎么可以打开 玻璃瓶盖很紧用什么方法可以打开 用手击打铁皮盖罐头的玻璃瓶底,是什么原理..那为什么又容易打开些呢? 一个铁皮罐头,无法把瓶盖打开,为什么用螺丝刀撬几下,一拧就开/ 如何巧开罐头 罐头包装的玻璃瓶可以在冰箱里冷冻吗? 选出与划线部分发音不同的单词（划线部分=【】）（ ）A.el【e】ven B【.e】xcuse C.tw【e】lve D.s【e】ven（ ）A.plu【s】 B.【s】tudent C.u【s】e D.【s】weet（ ）A.【th】ink B.【th】irteen C.smoo【th】 D. 根据汉语提示完成下列句子1.同学之间要互相关心,Classmates should --------- -------- and help each other.2.请把这封信传给汤姆.Please -------- -------- the letter -------- Tom.3.吉娜和双胞胎姐姐之间几乎没有不 1.Last month,part of Southeast Asia was struck by floods,from__effects the people are still suffering.that whose those what(我认为是what 可答案是whose）2.The place __the bridge is supposed to be build should be __the cross-river triffic is t 1.I work in a business __almost everyone is waiting for a great chance.a how b which c where d that （我认为是d,可答案是c） 2.He insisted that what he did __rightand the man who had done wrong to him__ a was;was punished b be;be punisded c 几道英语题!并能说明原因哦! 谢谢!We finally reached _______ the local people called the Golden Triangle.A. where B. that C. what D. which—— How is everything going on with your studies? —— Quite well. Not so smoothly as I 用括号内所给形式填空.1、The picture on the wall is______(difference)from the one on the desk."答案是different,为什么不是more difference"2、When I came back from school,I felt ______.(sleep)"答案是sleepy,为什么不是asleep"3 请解释下为什么选这个,答得好 1 Whenever I met with some difficulty,I-----to Bob for A would turn B should turn C had turned D was turning2 This is one of the experiments----on in our laboratory.A being carried B carried C carrying D to ca 帮看看几道英语题.(1) I dong't know ______ to do now .A.how A.why c.which D.what(2)Jim_______ needs help _________his homework.A.seldom;with B.doesn't;at c.never;for D.often;to2、翻译.（1）、我在家庭作业方面需要帮助（2）我 ________by the failure of the project ,the manager could hardly say a word.A To be shockedB ShockC Be shockD Shocking I was afraid_____speak English in class,because I was afraid____be-ing langhed at.A to;of B of;to C in;of D of;in 副词、名词、动词、介词、形容词、代词一般怎么排列? no more、no longer、any longer的区别和用法. 英语 .第一题, 我用英文怎么讲 来这里,英语怎么讲 这用英语怎么讲 新手用英语怎么讲? 当然英语怎么讲 谢谢用英语怎么讲? 这句话用英语该怎么讲? 英语翻译现在,还缺一套钢铁战衣,翻译成英文. 没问题的英语怎么写 英语怎么说要读音 要读音 要读音 可以没问题的英语急