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某生物研究性学习小组,在对沂山某地域内的动、植物种类进行调查后,绘制了如下食物关系图。请据图回答:

(1)若要构成一个生态系统,还濡增加的成分有             

2)蛇与鹰之间的生态学关系是       ;处在第三营养级的生物有             

3)若蜘蛛获得l0千焦的能量,则最少需从蝴蛛中

获取_   千焦的能量。若该区域受到某种重金属污

染,一段时问后体内积存该物质最多的生物是    

(4)沂山生物种类及数量能够较长时间保持一种动态平衡,原因是          

(5)同学们对该区域田鼠的毛色遗传做了如下研究:选取四组田鼠让其自由交配,对所生小鼠的毛色进行统计,并绘制如下表格:

请用遗传图解(A,a表示显性和隐性基因)表示第②组交配组合的繁殖过程。

党的十五大报告明确提出实施可持续发展战略。十六大以来,党中央提出建设生态文明的新要求。十七大报告提出将生态环境良好的国家作为全面建设小康社会的重要目标之一。面对资源约束趋紧、环境污染严重、生态系统退化的严峻形势,十八大报告提出建设“美丽中国”,要把“生态文明”提升到更高的战略层面,融入到经济建设、政治建设、文化建设、社会建设各方面和全过程。

结合“美丽中国”概念的提出过程,说明人类追求真理的特点。

下面为四个遗传系谱图,有关叙述中正确的是

A.甲和乙的遗传方式完全一样

B.丁中这对夫妇再生一个女儿,正常的几率为1/8

C.乙中若父亲携带致病基因,则该遗传病为常染色体隐性遗传病

D.丙中的父亲不可能携带致病基因

下图为我国东南沿海某地区示意图,读图回答2题。

2.关于此时A地的叙述,正确的是                                        (  )

雨水汇集,泛滥成灾 受暖锋影响 气压将不断升高 吹偏南风

A①②         B③④         C①③         D②④

America is a mobile society. Friendships between Americans can be close and real, yet disappear soon if situations change. This can be quite difficult for us Chinese to understand, because friendships between us flower more slowly but then may become lifelong feelings, extending (延伸) sometimes deeply into both families.

Americans are ready to receive us foreigners at their homes, share their holidays, and their home life. They will enjoy welcoming us and be pleased if we accept their hospitality (好客) easily.

Another difficult point for us Chinese to understand Americans is that although they include us warmly in their personal everyday lives, they don’t show their politeness to us if it requires a great deal of time. This is usually the opposite of the practice in our country where we may be generous with our time. Sometimes, we, as hosts, will appear at airports even in the middle of the night to meet a friend. We may take days off to act as guides to our foreign friends. The Americans, however, express their welcome usually at homes, but truly can not manage the time to do a great deal with a visitor outside their daily routine. They will probably expect us to get ourselves from the airport to our own hotel by bus. And they expect that we will phone them from there. Once we arrive at their homes, the welcome will be full, warm and real. We will find ourselves treated hospitably.

For the Americans, it is often considered more friendly to invite a friend to their homes than to go to restaurants, except for purely business matters. So accept their hospitality at home!

29The writer of this passage must be ______.

Aan American                          Ba Chinese

Ca professor                           Da student

30When we arrive in America to visit an American friend, we will probably be ______.

Awarmly welcomed at the airport     

Boffered a ride to his home

Ctreated hospitably at his home       

Dtreated to dinner in a restaurant

31The underlined words  “generous with our time” in Paragraph 3 probably mean ______.

Astrict with time                     

Bserious with time

Ccareful with time                     

Dwilling to spend time

32A suitable title for this passage would probably be “______”.

AFriendships between Chinese   

BFriendships between Americans

CAmericans’ hospitality        

DAmericans’ and Chinese’s views of friendships

有关糖类生理作用的描述错误的是(  )

A.核糖和脱氧核糖是核酸的组成成分
B.葡萄糖是重要的能源物质
C.糖原是所有生物体储备的能源物质
D.纤维素是植物细胞壁的主要成分

电渗析法淡化海水装置示意图如下,电解槽中阴离子交换膜和阳离子交换膜相间排列,将电解槽分隔成多个独立的间隔室,海水充满在各个间隔室中。通电后,一个间隔室的海水被淡化,而其相邻间隔室的海水被浓缩,从而实现了淡水和浓缩海水分离。下列说法正确的是( )

A. 离子交换膜b为阳离子交换膜
B. 各间隔室的排出液中,①③⑤⑦为淡水
C. 通电时,电极l附近溶液的pH比电极2附近溶液的pH变化明显
D. 淡化过程中,得到的浓缩海水没有任何使用价值
一种拖地用的拖把,原来买4个需要300元.如果每个比原来降价15元,那么现在买1个这样的拖把要用多少元?

下图某一地区的区域发展过程图,从图中,可以反映出       

A.区域核心不断缩小,外围空间不断扩大 B.产业结构优化,第三产业比重逐渐提高

C.交通网络不断完善                  D.区域内联系逐渐增加,与区外联系逐渐减弱

下列做法有利于创建美好班集体的是( )
A. 班干部为拉选票请同学吃肯德基
B. 将本班清洁区的垃圾倒在别班的清洁区场
C. 同学之间团结协作共同进步
D. 为提高学习成绩,不参加任何课余活动

如图所示,在距地面高2LA点以水平初速度v0=投掷飞標.在与A点水平距离为L的水平地面上点B处有一个气球,选样适当时机让气球以速度v0=匀速上升,在上升过程 中被飞镖击中.不计飞镖飞行过程中受到的空气阻力,飞標和气球可视为质点,重力加 速度力g.掷飞镖和放气球两个动作之间的时间间隔△t应为(     )

  A          B          C           D2

为探究甲、乙两种物质的吸热本领,小明设计了如图所示的实验装置。

1 )在两个相同的烧杯中分别装入质量相同、 ______ 相同的水和植物油。

2 )实验中,用 ______ (选填 加热时间 温度变化量 )表示物质吸收热量的多少。

3 )发现煤油升温比水快,说明煤油的吸热本领比水 ______ (选填 )。所以人们在夏天时制作 ______ 垫(或枕)用来防暑降温效果更佳(选填 )。

2019年8月1日,中国科研团队研发的“_________”芯片登上了世界顶级学术杂志《自然》封面。这款中国芯片是世界首款异构融合类脑芯片,也是世界上第一个既可支持脉冲神经网络又可支持人工神经网路的人工智能芯片。( )
A.北极星 B.北斗 C.天机芯 D.麒麟
现实是此岸,理想是彼岸,中间隔着湍急的河流;行动则是架在河上的桥梁。
要把理想变为现实,我们应该做些什么?

《辛丑条约》后,住在东交民巷的老王被迫搬家,是因为列强要在此(      )。

   A.开商铺          B.建教堂            C.设使馆          D.办工厂

植树造林是治理风沙的有效措施。在我国进行这项工作时,最适宜选种的植物是( 

A.胡杨树、柳树      B.白桦、水杉     C.拧条、梧桐    D.梭梭、沙拐枣

读右图,回答:

1A是我国的        自治区,其行政中心B      

因阳光灿烂,晴天多,有“        ”的美称。该城

市还建有我国著名的藏传佛教圣地            

2)该自治区的代表性的农作物为             ;该省区重要的畜牧牲畜品种是          

3)图示区域显著的自然环境特征是:(    

A、干旱   B、高寒   C、炎热   D、湿润

4)该地区有我国最雄伟的山脉是        其中有世界最高峰为                  

下图为我国某山区等高线图,读图回答问题

(1)地形部位名称② _____________,该地形部位植被繁茂经常会有河流发育。

(2)度假村甲位于A山的__________(方向)坡,某时刻度假村甲的气温为21℃, 假如气温仅与海拔有关,此时A山顶的气温约为__________℃。

(3)乙村计划从河里引水,③④两条线路中_____更合理。理由是  ______ ________________________

 (4)根据这幅等高线地形图观察,修一座水库更利于当地经济的发展。如果你是修建水库的负责人,BCD三处__________处选为坝址更为合理。

19511225,我国成立玉树藏族自治区,1955年改为自治州,下辖玉树县(结古镇)等六县。它直接说明我国在少数民族聚居的地区实行(   

A、人民代表大会制度   B、民族区域自治制度  C、多党合作制度  D、完全自治的制度

43. The official was arrested and received a six year’s sentence because of            of power. (滥用职权)

44. Giving a lecture before so many people s            me.(让我紧张)

45. It’s no use          (订阅)to such kind of newspaper.

46. It’s necessary that ambulance crew t            (照顾) to the injured on the scene.

47. He              (任命) vice manager of the company last week.

48. The boy a              (绝对) believe in his teacher.

49. The crowd p            (惊慌)at the sight of the accident.

50. Doing eye exercises is                (有益) to our eyes.

51. It really           (使生气)me when people make noise in the reading room.

52. His father make a          (足够的) money to support such a big family.

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