求半径为R周围充满

There are five books on the book shelf.(同义句转换) There is not a book on the shelf.和 There aren't any books on the shelf.是不是一样的? Last week ,I bought an interesting story book,________________is very beautiful.填it's cover.,the cover of which ,the cover of it 有什么区别 l have bought a very ___story book A.interesting B.more interesting C.interest 熔炼 铜与铜合金 在浇铸方法上有何讲究? 铜合金的铸造工艺有什么区别? This is ______book Ibought yesterday.Isn't it ___interesting one?A.the ;the B.the ;a C.a ;the D.the;an选哪个,为什么 Is this book the one I bought for you yesterday.如果没有the one,book在这里不是先行词,为什么?有人能帮我分析一下这个句子结构吗?能不能用is this book that i bought for you? This is the book that I bought it yesterday.改错 Is this book __ you bought yesterday 空答案给的是the one 这个明白但是 如果空里 添 what 把后面的句子看做宾语从句可以吗? this is the book that i bought it yesterday 为什么去掉it ? 英语翻译求提供.新标准大学英语综合教程第三册的从unit1～unit10的课文译文就是active reading（1）（2）的译文.不是课后翻译.是正文译文. 谁有新标准大学英语综合教程3第二单元课文翻译啊,急啊 谢谢啦 The book he bought yesterday is very interesting. A. who B.whom C.that D.it选哪个 英语翻译急求大学英语教程第四册的课文翻译,第一单元课文时是can we know the universe的那本书,不是新视野还是综合教程的. 英语翻译是这个的课文翻译 压铸机的冲油压力是什么!一般为多少!压铸机的冲有压力和氮其压力是什么关系啊!一台设备上加工不同的压铸件是不是要不同的冲油压力呢?不是很了解! 英语作文 国庆节 按时完成作业,注意事项 帮忙写一篇英语作文（关于今年国庆节的）.急!还要交作业呢! the book __he bought yesterday is very interesting. a./ b.why. c.when. d.what 求一篇英语作文,大一国庆作业. 英国国庆节的来历和怎么度过的英语作文带翻译 It is interesting to read the book.It is interesting reading the book.这两句从语法上讲都是可以的,但是为什么说第一句优于第二句呢? 以“an interesting book”为题写一篇英语作文60个单词左右.明天要,有点急!好的再加分. The____(story)in the book are very interesting.The____(story)in the book are very interestingBill likes English,so he wats___(join)the English clubplease come and show____(we)your watch这几个孩子想和你下国际象棋.These kids want___ ___ __ 如何计算铸造业成本? I'm reading ____ novel.It is ____ interesting story.A.a;an B.a;a C.the;the D./;an 英语反义疑问句What an interesting story ,______,______? I have an interesting story book改为一般疑问句 l'm reading a interesting story.哪个错了? 在锻压中,什么是正挤压,什么是反挤压 为什么有些气体需要降温后才能被压缩?请通俗详细说明理由!