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科目:初中英语 来源: 题型:阅读理解

What’s a blog? A blog is a personal online diary(日记). It’s cool, it’s hot, and everyone is doing it. People talk about it often. Sound like a fashion? In fact, It’s another trend (流行趋势). And the word “blogger” means a person who writes diaries online. Are you a blogger?  
Many bloggers are teenagers who log (进入) onto websites to discuss anything in their lives. Many of today’s teenagers are not afraid to openly discuss everything in their lives. Teenagers complain about their parents and homework. They share diaries, post(发布) songs from the latest bands and show pictures of theirs. They write their own poems, say something about their girlfriends or boyfriends and complain to each other or offer support. But mostly they just write down what they do every day.  
However, many parents are worried about these young bloggers. Parents see the kids talking about how they got drunk last weekend and how they don’t like studying. They are using the language that is surprising to their parents. Besides hearing from their friends, teen bloggers also get messages from strangers. Most of the time, it’s older men asking to meet teenage girls. “These strange men are dangerous for my kids. They sometimes teach my kids bad words.” said Cara Cabral, a mother of two children.  
Many teenagers and young adults know it’s not safe to use blogs on the Internet. They know they are putting information about themselves in a place where it can be seen by anyone. But teenagers are unwilling to give up these new communication tools that have become a way of life for many of them.   
【小题1】 The underlined word “it” in the first paragraph means ________.  
A. the fashion          B. the Internet       C. the blog      
【小题2】 Which of the following is NOT TRUE?  
A. Teenagers don’t tell about their personal life in their blogs.  
B. Teenagers mostly write down what they do every day in their blogs.  
C. Teenagers complain about their parents and homework in their blogs.  
【小题3】 What’s the main idea of the third paragraph?  
A. Many parents don’t understand kids’ language in their blogs.  
B. Many parents are worried about these young bloggers.   
C. Many parents can understand why their kids don’t like studying.  
【小题4】 Many parents think it’s         for their children to get messages from strangers.  
A. dangerous     B. interesting        C. surprising   
【小题5】 We can learn from the last paragraph that         .  
A. It’s easy for many teenagers to give up blogging on the Internet                   
B. It’s safe for many teenagers to put their personal information on the Internet  
C. It’s popular for many teenagers to use blogs on the Internet 

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科目:初中英语 来源: 题型:阅读理解

(10分)生长素的主要作用是促进细胞纵向伸长,其作用机理如图所示,请回答下列问题:

(1)生长素作用的第一步是与细胞膜上的受体结合,形成“激素—受体复合物”,这一过程体现了细胞膜的_________功能。
(2)被激活的“激素—受体复合物”能引起内质网释放Ca2 + , Ca2 +促使细胞内的 H+        的方式运往细胞外,增加了细胞壁的延展性,使细胞壁对细胞的压力减小,导致细胞吸水、体积增大而发生不可逆增长。细胞在生长过程中体积变化最大的细胞器是________。实验发现,细胞在持续生长过程中,细胞壁的厚度能基本保持不变,出现这种现象的原因是由于_____________(填细胞器)为细胞壁添加了新的成分。
(3) Ca2 +还能激活细胞中的转录因子,它进入细胞核后,能引起____酶催化 mRNA 的合成。
(4)生长素促进根系生长的最适宜浓度要比茎低得多,稍高浓度的生长素能促进乙烯的生物合成,从而抑制了根的伸长,这说明生长素的作用具有__________。
(5)科学家研究发现紫外线可以抑制植物生长,原因是紫外线增加了植物体内吲哚乙酸氧化酶的活性,从而促进了生长素氧化为3—亚甲基氧代吲哚,而后者没有促进细胞伸长的作用。现在提供生长状况相同的健康的小麦幼苗若干作为实验材料,请完成下列实验方案,以验证紫外线抑制植物生长与生长素的氧化有关。
步骤 1 :将小麦幼苗平均分为甲组和乙组。
步骤 2 :给予甲组适宜的可见光光照,给予乙组_______________________光照。
步骤 3 :观察两组幼苗的________________,并测量___________的含量。
预测实验结果: ______________________________________________________。

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科目:初中英语 来源: 题型:

(6分)据图回答下列问题:

(1)据图1,若某植物幼苗已表现出向光性,且测得其向光面的生长素浓度为m,则背光面生长素浓度范围是             
(2)据图1可知,除草剂灭草的原理是使杂草的生长素浓度大于       (填图1中字母)。
(3)在探究生长素促进插条生根的最适浓度时,一名技术人员用几种不同浓度生长素溶液处理插条基部,然后在沙床中培养,观察生根情况。图2为生长素促进枝条生根的情况。请结合图1判断,在下列各项浓度值中,最好选用(   )
A.3mg·mL-1B.6 mg·mL-1C.9 mg·mL-1D.4.5 mg·mL-1
(4)生长素的主要作用是促进细胞纵向伸长,其作用机理如图3所示,请回答下列问题:

①生长素作用的第一步是与细胞膜上的受体结合,形成“激素—受体复合物”,这一过程体现了细胞膜的              功能。
②实验发现,细胞在持续生长过程中,细胞壁将发生一定变化,出现这种现象的原因是由于              (填细胞器)为细胞壁添加了新的成分。
③此外,Ca2+ 还能激活细胞中的转录因子,它进入细胞核后,能引起         酶催化mRNA的合成。

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科目:初中英语 来源:2015届江苏兴化安丰中学七年级下学期第二次月考英语卷(解析版) 题型:书面表达

根据下面的提示写一篇70字左右的作文

1. 昨晚,Simon做了一个梦

2. 在梦中他追赶一只兔子来到一扇门前。

3. 兔子轻松穿过这道门,Simon个子太大无法进入

4. 他喝下门旁边的一瓶水,瓶子上面有一个标签“请喝我”。

5. 喝水之后,他变得越来越小。

6. 他穿过这道门进入一个美丽的花园,在那儿玩的很开心

                                                                                  

                                                                                  

                                                                                  

                                                                                  

                                                                                  

                                                                                  

                                                                                  

                                                                         

 

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