how many English words have you learnt up to now同义句 ,用have/has been down

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• 根据括号中的提示,用定语从句完成下列各句：1.A student _________________will earn respect from otherstudents.(you have to work hard and achieve high grades in exams)2.you may look up a dictionary _________________ when learning new words from english articles.(the dictionary has Chinese defintions for english words.)3.the policeman__________was my uncle.(i greeted a policeman just now.)4.the school tennis club __________________meet and hold a match every week.(the members
• 用括号中单词的适当形式完成下列句子.（death,memory,basic,injure,memorize,dramatic,improve,connect,colourful,imagine)1.You can _______how sad I was when I heard the bad news.2.Many of them wore _____national costumes.3.Has the phone been _______yet?4.I want to be a volunteer for the 2008 Ony-mpic Games,so I has to _______my English.5.Her opening words were ______.6.That defeat meant the _____of all my hopes.7.I have a very poor_____.8.An actor must b able to ______his li
• 1,随处扔垃圾是决不允许的____ ____is never allowed.2,根据释义及首字母完成下列单词d____find or find outf____be afraid ofc____a pal or a friende____come into3,If you have any new words,you can look them up in a d____4,Singing songs makes me more interested in l____English5,I can't fing my photo a____.Iwant to put these new pictures in it6,写出下列的同义句(1)Please take good care of your babyPlease____ ____your baby____.(2)Jim has never been to Shanghai.His brother hasn't,either____Jim__
• 用所给词的适当形式填空,请说明原因1、Would you like something to drink-Yes,some__(orange),please2、These days I have been much__(busy)than before33、China has__(success)sent up many man-made satelites to the space4、Teachers are__(need) by the children in the countryside5、It is long time since we__(meet)last time6、We should pay special attention to the__(spell)of these words7、I met people from different companies and wrote down their telephone__(number)
• The game helps you learn English __ tasting your konwledge of English grammer and vocabulary.A.by B.with C.to D.bafore When __ the teacher __ here?He has __ here for several hours.A.has been;come B.did arrive;got C.did come;been D.has left;been away fromWhen it began to snow last night,we__(have)a meeting.是不是填were having?He ___(choose)many timesIt's really wonderful to see the snow ___(fall)down from the sky.It has been dead for a week.（同义句）____ ____
• how many English words have you learnt up to now同义句 ,用have/has been down
• 33℃,有250克硝酸钾溶液,若像该溶液中加入30克硝酸钾,则恰好为饱和溶液,若原溶液恒温蒸发掉60克水,则33℃时,饱和硝酸钾的溶解度为多少?我同学的答案是50克,可我认为不是为什么30g硝酸钾和60g水组成一定是饱和的哪?我是这样算的,设X为原溶质,Y为原溶剂.则 X+Y=250 （X+30）/Y=X/（Y-60）我觉得这样算不错啊,但为什么算出来时34%?250g-60g是溶液的质量 但我的方程是 溶解度=溶解度 溶质/溶液=溶质/溶液 回1楼话
• 初三化学《溶质的质量分数计算》,几道练习题1、25°C时,将20g硝酸钾溶解于80 g水中,所得溶液的溶质质量分数为20%,现将此溶液经分成三等分,则每一份溶液的溶质质量分数均为20%.1）取第二份溶液,要使其溶质质量分数减小为原来的1/3,需要加____水.2)取第三份溶液,要使其溶质质量分数变为原来的1.5倍,需加入_______g硝酸钾或者蒸发掉_____g水.2.在实验室中制取88g二氧化碳.需caco3 200g1）若改用含杂质20%的石灰水与盐酸反应,需这种石灰石多少克?2）如果消耗盐酸的质量为500g,求盐酸的质量分数?3）求所得溶液质量分数?我今天要做完的,