one iron thread was used up for a fragment adding one meter equals to the half the original length in the first time;and the remaining has been used up again for another fragment minusing one meter equals to the half of the remaining length ,what is

one iron thread was used up for a fragment adding one meter equals to the half the original length in the first time;and the remaining has been used up again for another fragment minusing one meter equals to the half of the remaining length ,what is 英语翻译Metalworking The discovery and use of iron to make tools and weapons was one of the most important advances in civilization.Some historians consider the use of iron to be one of the distinguishing characteristics separating civilization f iron Iron iron 英翻中.Each one of the about 12000 iron pieces was designed separately to give it exactly the shape needed.成分也划分一下~ 英语The master's face was iron dark. The iron pan was covered with white enamel Hypothesis TestingIn a study of iron deficiency among infants, the blood hemoglobin levels were compared between two samples of infants, who follow different feeding regimes. One group consisted of breast fed infants, while the other group was fed wi The iron ball is heavier than the wooden one.同义改句The wooden ball____ ____ ____the iron ball. gradually,wood was replaced by iron,which in turn was succeeded bt steel.3914 gradually,wood was replaced by iron,which in turn was succeeded bt steel.3914 iron certainty是斩钉截铁的肯定吗?原句是It was the cold,Gared said with iron certainty 阅读理解,判断正误.急!A woman was waiting in a line at the bank. She was holding her little son in her arms. The little boy was only two years old. He was eating a roll quietly. Finally the woman came to one of the windows of the iron(铁 Any permission issue on this thread?I posted one topic yesterday, I cannot edit it today. 语法英语选择题1.It_____sunday,there was no school.A.being B.is C.was D.were2.I wanted some thread but there was_____in the drawerA.none B.nothing C.no one D.no thing3.The scientists and technicians overcame a lot of difficuty_____the personal thread是什么意思? thread as thread title