下列关于细胞周期的叙述，不正确的是

A．原癌基因主要负责调节细胞周期    B．温度和pH影响动物细胞培养的细胞周期

C．B细胞受抗原刺激后细胞周期缩短   D．已分化的细胞都失去细胞周期

屋主政治是人类历史发展的必然趋势，古今中外人们都在不断地探索。阅读下列材料，回答问题

材料一   中书省负责定旨出命，长官中书令二人；门下省掌封驳审议，长官侍中二人；中书门下通过的诏敕，经皇帝裁定交尚书省长官尚书令一人，副长官左右仆射各一人。

------〈〈中华通史〉〉

材料二

    

图1 雅典公民大会会场与讲演台遗址        图2 陶片放逐法（点票）

材料三

            

请回答：

（1）据材料一指出唐朝三省六部制的创立有何作用？

（2）图1图2是雅典的两项重要制度，简述其职能或作用。

（3）图3图4图5分别体现了哪些民主权利？如将古代雅典民主与当代美国的民主政治相比，就民主的性质，范围和方式而言有何不同？

Residence Inn Milford

Within 15 minutes from historic Yale University and New Haven, the Residence Inn Milford offers great amenities (便利设施) and first-class service for business or leisure travel. Our all-suites hotel near New Haven is 1 hour from Bradley International Airport and 10 minutes from a Metro North train station that can get you to NYC in under an hour and a half. At our Milford, CT hotel, enjoy spacious studio, suites that are 50 percent larger than traditional hotel rooms.

Our suites offer hot breakfast buffet and a nightly social hour (Monday – Wednesday), on-site exercise room and outdoor swimming pool.

Price: $ 119 per night   Pet Policy: Pets allowed   Check in time :3 pm

Marriott Detroit Southfield

Newly renovated (翻新), the Marriott Detroit Southfield Hotel is one of Detroit’s most

desirable hotel destinations. With excellent public areas, enhanced meeting spaces and carefully redesigned guest rooms, the Marriott Detroit Southfield Hotel meets the needs of business, leisure and group guests travelling to the Detroit area. This suburban Detroit hotel has a prime location that allows for easy access to the Detroit Zoo, Henry Ford Museum, Comerica Park, Ford Field and many of the other local activities in the area. It is open for breakfast, lunch and dinner.

Price :$ 75 per night    Check in time : 4 pm

Comfort Suites Kodak

100 percent smoke free and pet free hotel conveniently located at the main gateway to the

Great Smoky Mountains off Interstate 40 at exit 407, close to all the fun and excitement in Pigeon Forge, Gatlinburg, and Knoxville, including Dollywood, Dixie Stampede, Smokies Park, Sevierville Events Center, Tanger Outlet Mall, University of Tennessee and more. Guests enjoy waking up in our well-appointed guest suites featuring contemporary furnishings and LCD flat screen televisions, starting their day with our free breakfast, and relaxing in our indoor pool and exercise room.

Price: $55 per night   Check in time: 3 pm

The Swinton Hotel

Located in the very heart of the centre of London, the Swinton Hotel is one of the leading

Kings Cross hotels offering free breakfast. It is a friendly and relaxed hotel. With a reputation as one of the top cheap hotels in London and a location which allows easy access to all tourist attractions, shopping areas and transport connections, you have come to the right place if you are looking for brilliant Kings Cross Hotels. Whatever reason you are looking for cheap hotels in London and whether you are visiting on business, as a tourist or to enjoy the vast varieties of entertainment and nightlife, we will be more than happy to provide you with a safe and comfortable environment. The Swinton Hotel is situated in an ideal location for those travelling to or from London by rail. Being located within walking distance of many popular tourist attractions, you are unlikely to find many cheap hotels in London situated in a better location.

Price :$45 per night   Check in time: 3 pm

46. What do we know about Marriott Detroit Southfield?

A. It’s designed specially for businessmen.  B. It has well-developed traffic to other cities.

C. It is quite close to local attractions.      D. It is the cheapest of the four hotels.

47. Which of the following is TRUE according to the four advertisements?

A. You may bring pets into Residence Inn Milford. 

B. The Swinton Hotel is located in New York.

C. Marriott Detroit Southfield is built inside a park. 

D. Smoking is allowed in Comfort Suites Kodak.

48. What do the four hotels have in common?

A. They are all near the airports.          B. They all offer guests breakfast.

C. People can enjoy free outdoor pools.    D. People should check in before 3 pm.

49. If you want to take exercise and go climbing after settling down, you may choose ____.

   A. The Swinton Hotel             B. Marriott Detroit Southfield

   C. Residence Inn Milford          D. Comfort Suites Kodak

在研究性学习的过程中，针对能源问题，大气污染问题同学们提出了如下四个活动方案，哪些从理论上讲是可行的                   

A．改进热机的生产工艺，总有一天热机的效率可达到100％

B．发明一种制冷设备，使温度降至绝对零度以下

C．汽车尾气中各类有害气体排入大气后严重污染了空气，想办法使它们自发地分离，      既清洁了空气，又变废为宝

D．将房屋顶盖上太阳能板，可直接用太阳能来解决照明和热水问题

设集合，则下列关系中正确的是

       A．                                             B．

       C．                                                     D．

19世纪植物学家施莱登和动物学家施旺建立了细胞学说，关于细胞学说的说法正确的是（ ）
A.一切生物均由细胞构成
B.细胞学说揭示了生物界的统一性和多样性
C.细胞学说将动植物通过细胞共同特征联系起来
D.细胞学说揭示了细胞分裂的方式有减数分裂、有丝分裂和无丝分裂

下列关于细胞分裂的有关叙述中，不正确的是（　　）

	A．	细胞分裂间期细胞核中发生了DNA的复制和有关蛋白质的合成
	B．	高尔基体、线粒体在植物细胞分裂过程中活动旺盛
	C．	减数分裂四分体时期非姐妹染色单体之间可发生交叉互换，能产生基因重组
	D．	大肠杆菌在分裂过程中出现纺锤体和染色体

3．填入下面文段空白处的词语，最恰当的一组是

让三亿人上冰，为北京冬奥会助力。国内首档冰上真人秀《跨界冰雪王》召集众多明星参与。 ① 对综艺市场的开拓 ② 对冰雪运动的推广来说，都是创举。让更多的人发现，滑冰 ③ 针对运动员的专业项目， ④ 可以全民参与的冰雪嘉年华。导演张艺谋称：“ ⑤ 掌握这样一项运动， ⑥ 能特别美地表现出来，就有可能参加昌平冬奥会开幕演出，为国争光。”

        ①      ②       ③       ④        ⑤      ⑥

A. 无论   还是    不是      而是       既      还

B. 不仅   而且    既是      又是      只要     就

C. 不论   还是    不只是    更是      如果     又

D. 无论   而且    不仅是    还是      一旦     还

已知A、B、C、D之间的转化关系如图所示．下列说法正确的是（　　）

A．若A为Fe，D为氢气，则B一定为酸

B．若A、D为化合物，B为水，则C一定是气体单质

C．若A、B、C、D均为化合物，该反应一定属于复分解反应

D．若A、B、C、D均为10电子微粒，且C是可使湿润的红色石蕊试纸变蓝的气体，则D常温下一定呈液态

  I wish there would be a way to describe China in simple terms but that's impossible. For the most part Chinese people are friendly, easy­going and optimistic. They are curious and unusually patient and they are also the hardest­working people I have ever met.

  In China, family is everything. In my English classes when the students were asked what they would do if they only had a few hours to live, most students told me how they would spend their last few hours with their families and parents. Many times the subjects in the classes center on families and friends. I teach many students a year, talking to them freely.

  The cost of living here is very low compared with that of the US. The city of Xiang Fan I live in isn't large and I live better. Non­imported(非进口的)foods are very cheap, so are clothing and articles of everyday use. The cost of public transportation is very low, too. Chinese value education. However, it is reported that many children can't afford the expenses of schooling and are forced to leave school in some poor areas in China. But they organized Project Hope many years ago. It creates conditions for the poor children to go back to school. In my opinion, Project Hope is of great importance to the development of the rural education.

  When we read news of China in the west, rarely, if ever, will we see anything mentioned of the positive changes China has gone through. While it is true that economic miracles have not reached many areas of China, but we also have the same problems.

  When I am asked which country I consider better, China or the US, my answer has always been the same, “We are not worse or better than each other, we are only different.”

21．What does the author think of Chinese people?

A. He thinks most Chinese people hardly work.

B. He thinks most Chinese people are proud.

C. He praises most Chinese people a lot.

D. He dislikes most Chinese people.

22．What is the author doing in China?

A. He is visiting the places of interest.  B. He is teaching English in a school.

C. He is studying in a college.         D. He is on business.

23．What are NOT cheap in China in the author's opinion?

A. Clothes and shoes made in China.       B. Local foods.

C. Public transportation tickets.            D. Imported foods.

24．We can infer from the passage that the author thinks ________.

A. the westerners have got to know China well

B. China's economic miracles have appeared everywhere

C. the progress of China is seldom reported in the US

D. the education in rural areas is never cared about in China

已知函数.

（Ⅰ）求函数的定义域；

（Ⅱ）若，求的值.

艾滋病（AIDS）是一种削弱人体免疫系统功能的疾病，它是由感染HIV病毒所引起的．HIV病毒具有囊膜，囊膜是HIV病毒从宿主细胞内出来时裹上的生物膜．图甲、乙、丙、丁分别表示四种细胞结构．下列说法正确的是（　　）

	A．	HIV病毒的囊膜基本结构与甲基本相同
	B．	从结构上看，HIV病毒和乙、丙都具有双层膜，这些膜结构都属于生物膜系统
	C．	丁和HIV病毒的组成物质完全相同
	D．	HIV病毒与乙、丙、丁含有相同的遗传物质

 

下面为我国西南地区1月(左图)和7月(右图)晴天出现频率(％)图，读图回答24-25题。

24.1、7月晴天出现频率变化最大的地区是：

  A．云贵高原东部                     B．四川盆地

  C．湖南和湖北西部地区               D．横断山脉和云贵高原西部

25.图中①地区1月晴天出现频率低的主要原因是：

  A．地形闭塞，空气流通不畅           B．受准静止锋影响

  C．湖泊多，蒸发旺盛，水汽丰富       D．受来自印度洋湿润气流影响

某生物基因型为AaBb,两对基因独立遗传。当生物进行减数分裂时,形成了一个Aab

     的精子,产生这种现象最可能的原因是(   )

  A.减数第一次分裂前的间期基因突变的结果

  B.减数第一次分裂交叉互换的结果

  C.减数第一次分裂同源染色体未分离的结果

  D.减数第二次分裂姐妹染色单体未分离的结果

民国时期，在社交礼仪上逐渐用西方的握手，鞠躬取代跪拜式，称呼上用“先生”、“同志”取代“老爷”、“大人”，这一变化在本质上体现了

A.西式礼仪广为接受          B.民主共和的平等精神

C.西学在中国的发展          D.“中学为体，西学为用”

读白令海峡及其周边区域图，完成下列各题。

【1】甲地地方时比苏厄德
A. 晚约2小时 B. 早约2小时 C. 晚约22小时 D. 早约22小时
【2】根据图示信息可判断，该区域所处月份可能为
A. 1月 B. 4月 C. 7月 D. 10月
【3】图示季节
A. 堪察加半岛和苏厄德均盛行西南风
B. 堪察加半岛和苏厄德均盛行东南风
C. 堪察加半岛盛行西南风，苏厄德盛行东南风
D. 堪察加半岛盛行东南风，苏厄德盛行西南风

 在下列几组化学元素中，构成细胞膜所必需的基本元素是

A．C、H、O                B． C、H、O、P

C．C、H、O、N             D．C、H、O、N、P

下图是某同学设计的一套渗透装置，刚开始漏斗内外液面齐平，S₁和S₂溶液是质量浓度不同的葡萄糖溶液。一段时间后漏斗内液面不再上升时，漏斗内外的液面差为h。下列相关叙述，正确的是

A.漏斗内液面开始上升前，S₁溶液的质量浓度＞S₂溶液的质量浓度

B.漏斗内液面停止上升后，S₁溶液的质量浓度＝S₂溶液的质量浓度

C.漏斗内液面开始上升时，水分子通过半透膜的方向是S₂→S₁

D.漏斗内液面停止上升后，溶质微粒和水分子都不再通过半透膜