at 3 years;in 3 years;every 3 years有什么区别?

at 3 years;in 3 years;every 3 years有什么区别? at least one year of full-time paid work experience in the past three years翻译~ what 3 events happen in the same year but only happen once ever 4 years 南外练习卷的题目,有兴趣的进1 Hou many babies can a mother mouse have a year at least?2 Hou many years can a dove live at least?3 Where was the 15th Asian Games held in 2006?4 How long can a cookroach live with no head at least? 英语翻译1、The justice said the Congress did not intent to create a free standing physical violence offence in a 55-year-old law known as the House Act.2、 .and she was 26-year old,years older than the topless dancer.3、Senators look at more i The present value of $100 due in 5 years at a 3% discount rate.RT This year's production in our company is five times ___ it was ten years ago.A than B as D whatThe production this year is 3 times_____it was 2years ago.A.as B.what D.much as in 20-year time和in 20 years' time区别 英语翻译One of the most famous travelers in all of history was Marco Polo.At the age of 17,he left Italy with his father and uncle.It took them more than 3 years to cross the mountains and deserts of Asia.In the year 1275,they reached China.They at last year和in last year.有什么不同 in the first year和at the first year I am in Year 7 at walker What year r u in at school? The original value of machine X is V dollors,while the original value of machine Y is 2V dollars.Both machies depreciate in value at a constant rate of 10 percent of their origical value per year.Compare :A.The value of machine X after 3 years B.The Mr Wang came to Shanghai___.A.since 2007 B.for 3 years C.the year before last D.next years2.Alice was clever enough to ____the time at the age of four.A.speak B.say C.tell D.talk 3.We don't have to go shopping .There is __meat in the fridge.A.quite a 将下列句子变成一般将来时.2.He went there by plane.（some day next year）3 Chinais a modern and strong country.（in twenty years）4 Do you study hard?（fromnow on）5.Shedidn’t speak English at the meeting.（before long） 求present valuewhat is the present value of $5000 due in 5 years' time if the amount is discounted quarterly at the nominal rate of 6% per year? 求口语,题目talk about something that happened to you in your first year at your colleage,要求3分钟