题干

如图,某生态系统食物网简图,下列说法正确的是(  )

A:该生态系统中共有5条食物链

B:该生态系统中,各生物生命活动所需能量最终来自于植物草

C:作为一个完整的生态系统的组成成分,图中还缺少分解者

D:鹰和蛇的生物学关系是捕食和竞争关系

上一题 下一题 0.0难度 选择题 更新时间:2019-05-28 01:54:31

答案(点此获取答案解析)

D

同类题2

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。

    A Hong Kong Disneyland park admission ticket is your passport to a full day of magical adventures. Learn the ways to buy your tickets now.

    Three types of 1-day ticket are available:

Ticket Type

Price

General Admission Ticket (aged 12—64)

HK $ 499

Child Ticket (aged 3----11)

HK $ 355

Senior Ticket (aged 65 or above)

HK $ 100

    Free admission for Child aged under 3.

    Book Online Now

    Purchase tickets conveniently through our website, then pick up your tickets starting from 1 hour after you have purchased online.

    Purchase Tickets Directly at Hong Kong Disneyland Ticket Express

    You can purchase tickets at the Hong Kong Disneyland Ticket Express, conveniently located at the MTR Hong Kong Station. Open from 9:00 am ---- 8:00 pm on Mondays to Fridays and from 9:00 am ---- 5:00 pm on Saturdays, Sundays and Public Holidays.

    Purchase 2 Park Tickets at one of the following locations and receive a FREE limited-edition Disney gift:

    ★ Avenue of Stars Kiosks

    You can purchase tickets at Avenue of Stars Kiosks in Tsim Sha Tsui. Open daily from 9:00 am ----10:30 pm.

    ★ Asia World-Expo Box Office

    You can purchase tickets at Asia World-Expo Box Office. Open Mondays to Fridays from 10:00 am ---- 6:00 pm.

    Reserve Tickets for Hotel Guest

    As a hotel Guest of Hong Kong Disneyland Hotel or Disney’s Hollywood Hotel, Park tickets are reserved for your purchase at front desk. Open daily from 9:00 am ---- 8:00 pm.

    Buy at Hong Kong Disneyland Main Entrance

    Guests can purchase tickets on the day of their visit at the Main Entrance Ticket Booths or Guest Relations Windows. Open daily from 30 minutes before Park opening until Park closes.

同类题5

中华文明源远流长,绵延不断,在创造了灿烂文明的同时,也铸就了自身辉煌而独特的文明史。阅读有关材料,结合所学知识,回答问题:
材料一: 大一统是中国历史的鲜明特点。从秦统一后的2000多年,中国的统一时间,大约占70%,分裂的时间占30%......元朝和清朝的建立及其对统一的中华民族国家的贡献说明,中华民族不是由汉族一个民族缔造的,而是各个民族共同缔造的。                               ——戴逸《中国民族边疆史研究》
材料二: 除古代中国外,全球其他地区的王朝覆灭后往往意味着人种、文化、宗教的更替,古埃及,
古巴比伦、古印度等都是如此。但中国的王朝却仅仅意味着坐天下者不同,其他一切照旧。这使中国文明获得了使西方史学家十分称奇的连续性。使中国文明连续不断的原因是很多的,有制度、文字、宗教等方面的因素
……                                          ——缪人凤《中国历史上王朝更替的内在原因及启示》
(1)据材料一指出是哪个时期出现了中国历史上第一个统一国家?材料中所阐明的中国历史的鲜明特点么?                                                                 
(2)据材料二,古埃及,古巴比伦、古印度等地区的王朝更迭,与古代中国的王朝更迭有很大差异。这种差异对中国历史有何影响?请结合古代中国制度或文字等方面的史实说明其原因。  
(3)“中华民族”这个名称体现了中华文明在其长期发展过程中,中国各民族整体上对中华文化的民族认同。今天这种民族认同对中华民族实现复兴大业有何意义?