原核生物有无细胞膜

A ball went towards a passing boat.went 是过去式,towards是一般现在.这两个时态咋整到一块去了? it went towards a passing boat 该句从语法上如何解释 make have write cut的一般现在是 it went towards a man in a passing boat on the person quality 急 Nobody but doctors or nurses and those __by Dr Hu__to enter the patient's room.A:invited；is allowed B:are invited；are allowed C:are invited；is allowed D:invited；are allowed Nobody but doctors or nurses and those __不要Dr Hu__to enter the patient's room.A:invited；is allowed B:are invited；are allowed C:are invited；is allowed D:invited；are allowed Nobody but the doctors ____________（允许）to enter the patient"s room. Nobody but doctors or nurses and those____ by Dr.Hu ____ to enter the patient’s room.A.invited; is allowed B.are invited; are allowedC.being invited; allowed D.invited; are allowed those 可以用 are invited 说成nobody but doctors or nurses and those invited by dr.smith is to enter the patient's room.sorry 是 is allowed colours与papers是什么意思?看清楚，是复数，我不是傻瓜，意思不同啦！！！！！！！ I nave two bikes,and one of them is Giant.这句话对吗?是要逗号还是要and还是两个都要? I go to ____noodle house. 是不是go home,go to house The ball went in the d___ of the man sitting in a boat on the river. a boat on the thin瘦字的英语怎么读? 英文thin怎样读 购一种图书的有1/3,购另一种图书的有5/6,两种图书都购的有23人,问班级共有多少人? 什么是日本浪人和武士相同吗 日本浪人如何理解? "日本浪人"由来 日本浪人用什么武器?日本武士刀有什么特点?他们打斗有啥特点?明朝那些事儿里有写过.,...可是我忘了... 英语翻译虽然我逐词翻可以但很奇怪的感觉,求翻译,不要百度词典之类的机器, Does it have wrong.They were talking on the phone yesterday.I dont think this sentence is wrong.But I don't know the wrong. make it 经常碰到 就是不大明白 you are all far away to me who is my ever lover.中文意思 The fulfillment of my dream is apparetly as far off as ever 是怎么意思?被他们笑了 The fulfillment of my dream is apparetly as far off as ever 有没有“ it is ever funny...或者 it is ever .的说法.而且这是不是在这个句子中等同于really.空前的.史无前例的?多给几个例子.谢谢 成都哪里有卖英文原版书的店 想买指环王成都哪里有卖英文原版书的店 我想买 The lord of the rings box white set 那个版本的有没有人买到过的啊~如图 offered a letter of ____to the headmaster. 他一到英国就会给他的家人打电话（as soon as)翻译