【单选题】下列生态系统中，自动调节能力最强的是（）

【单选题】一台显微镜有两种目镜（10X，20X），有两种物镜（4X，10X）。当我们在使用10X的目镜和10X的物镜观察时，可以观察到视野中有6个细胞；此时如果调换成20X的目镜和4X的物镜来进行观察，在视野中可能看到的细胞数目为[ ]

【简答题】阅读理解。 Turkey started the next stage of a smoking ban on July 19, 2009 by extending the ban to cafes, bars and restaurants as it aims to limit smoking in a country where 22 million people, half the adu...

【简答题】第三部分：阅读理解（共15小题，每小题2分，满分30分）.阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。IN a surprising discovery about where higher life can survive, scientists have found a shrimp-like creature and a jellyfish (水母) swimmin...

【简答题】基础写作你校最近进行了一场关于“中学生健康生活方式”的讨论，请根据以下同学们讨论的相关内容写一篇报道。普遍但有的问题学习压力造成的学生缺乏睡眠和运动必要的健康生活模式 1.养成早起习惯 2.不沉迷网络,远离香烟校长希望 对生活有乐观态度,保持身心健康你的决心 改掉不良习惯【写作要求】1. 文章的开头已给出，必须使用5个句子表达全部内容。2. 将5个句子组织成连贯的短文。 A discussion ...

【简答题】根据短文内容，从短文后的选项中选出能填入空白处的最佳的选项。选项中有两项为多余选项。 Although many Chinese students say that their knowledge of English grammar is good, most would admit that their spoken English is poor. Whenever I speak to a...

【单选题】--- ______ I call him back since you are in such poor health?--- No, you needn’t．I’d rather he ______ disturbed.

【简答题】The sleeping baby would be scared ________ a sudden loud noise.A.was thereB.there wasC.should there beD.there should be

【单选题】用解剖针挑取少许番茄果肉制成的标本叫做（　　）

【简答题】Consumers are being confused and misled by the hodge-podge(大杂烩) of environmental claims made by household products, according to a “green labeling” study published by Consumers International Friday.Am...