voltmeter什么意思

中国历史上出现多少个国家? 宇宙的形成有哪些可能? My uncle ______ until he was forty-five. (上海2000) A. married B. didn’t marry C. was not marrying 0分 My uncle ______ until he was forty-five. (上海2000) A. married B. didn’t marry C. was not marrying D. would marry 问题补充： 这是 My uncle ______ until he was forty-five.(上海2000)A.married B.didn’t marry C.was not marrying D.would marry b答案和c答案的区别在哪里,它们都是过去式的否定形式,为什么不选c? "pleas drink some ____.it tastes very nice " mother said My uncle ___until he was forty-five.为什么用didn't marry不用married? 我要让全世界人都知道我很低调英语怎么说? 为什么欧洲文明领先世界五百年 It was five o'clock in the morning _ they climed up to the top of the mountain.A.since B.when C.that D.until A____is about growing plants and animals for food.补全A开头词 tables and beds are all____英文填空 他们5点钟到这儿.They ___ ___ at five o'clock. 原核生物与蛋白质原核生物能进行各种活动,靠的只是没有空间结构的多肽链作用么?没有蛋白质么?他所用的酶都是多肽么? 关于原核生物蛋白质的问题原核生物只有核糖体,那么他就没办法进行蛋白质的加工,那他产生的蛋白质是一经产生就具有生物活性的么? 原核生物中蛋白质是干什么的原核生物中的蛋白质不能与DNA结合形成染色体,那它主要的功能是什么呢? Feliz Navidad啥意思呢? feliz什么意思 While the children were playing in the garden,their mother___(cook)in the kitchen,在线等 请教个英语语法,I saw a boy playing in the garden.I saw a boy playing in the garden.__________________________________这里老师说是主谓宾宾补,译为：我看见一个男孩正在花园玩.playing in the garden是宾补（分词作补 while when______ we thank you for your enquiry,we regret being unable to make you an offer for the time being.a.while b.When c.As d.Since选哪个 为什么 关于英语中的when和while,（ C ）How can you expect your children to be truthful ____ you yourself tell lies?A.but B.while C.when D.until为什么不能选B? 买鸭捉兔昔有人将猎而（ ）不识鹘,买一凫去原上.原上兔起,掷之（ ）使击.凫不能飞,投（ ）于地.又再（ ）掷,又投于（ ）地.至三四.凫忽蹒跚而人语曰：“我鸭也,杀而食之乃其分（ ）,奈 十万元——英语翻译,要百分之百准确 英语 when while在句型中的转换及选择题的应用仅初中而言,简洁易懂即可,不要太多! _____he left school,he found a job in a post office.A.While B.WhenWhen,我想问问为什么?这句话的主句、从句分别是什么? the voltage displayed on the type plate equals the available mains supply voltage.这句话里的type plate 上面那个的意思已经知道了，求这句话的翻译：A possibly installed power supply selector has to be set up. spacing 如题 yus 上海宁卫校中专英语重要吗 《鸭子捉兔》运用了什么写作手法? 买鸭捉兔这个故事告诉我们的道理?如如如如 peter is a doctor一般疑问句 否定句 incorporation是什么意思?