中国古代发明有哪些

director是什么软件 managing director是什么意思 center director是什么意思 duty director什么意思 she asked the townpeople to run to the dairy and pour all the day's milk into a deep trough. My sister wants to see a documentary 变为否定句 What are the benefits of forest trees?什么意思 1. What are the benefits of exercise on people’s health? My uncle comes from America.用Americe提问 How many books ____they_____?Five,but they haven't finished reading even one.这里应该填do,borrow还是did,borrow? I suppose we could turn them off science for good I suppose we could turn them off science for good 前面有有一句这样的话~we won't get a very good mark if the children don't actually enjoy the experiments.I suppose we could turn them off sci 求歌名.We try,we may just fight..看《天下足球》听到的 You need to wear ___ warm clothes.A.much B.few C.a lot D.lots of use up的同义词是什么 just use up怎么造句啊? use up 的同义词组是什么Tom has used up his money.(同义句)Tom has ____ ____ ____ his money. 关于Mg在Bunsen burner火中的反应如果把一小条Mg放在Bunsen　burner火焰中,Mg会产生耀眼的白色光芒.Mg是和什么物质产生反应的?是Bunsen　burner里碳氢化合物（CH4）和氧产生的二氧化碳(CO2)还是氧气(O 改错The Bunsen burner is so named because it is thought to be invented bu Robert Bunsen,who was GerThe Bunsen burner is so named because it is thought to be invented bu Robert Bunsen,who was German by birth. the bunsen burner is so named because it is thought----by robert bunsen,who was german by birthhaving been invented to have been invented 为什么用不定式形式?不定式不是表示一次性或目的吗? The Robert which can ride a bike is made by _________. 英语翻译 Do you mind the window A,to open B,opening C,open 翻译英语:中国、新加坡和加拿大都是很有趣的国家 China,Singapore and Canada____all____ ____ Bob Black usually wakes up about five minutes before the alarm clock goes off. clock alarm always seems to go off a little too early 翻译 I normally wake up about five minutes before my alarm clock goes off这是一般现在时吗?如果是goes 不是该用原形go吗 非第三人称单数的一般现在时后面动词不是加原形吗 英语翻译These days,a Chinese girl’s travel diary has become a hit online.Zhao Xing,with only a map,a travel bag and 30 yuan,left the Chinese mainland for the first time to Taiwan.At the airplane ,she was helped by a man who even told her his ph Don it open the cloor open the window 的中文意思 know,to,number,answer,the,you,three,do(?)连词成句 快 know,to,number,answer,the,you,three,do(?)连词成句 with the front window