题干

以下方程式的书写与基本反应类型的判断均正确的是(  )


A:Fe+O2═Fe3O4  化合反应

B:2H2O═2H2↑+O2↑  分解反应

C:Cu+2AgNO3═2Ag+Cu(NO32      置换反应

D:Ba(OH)2+H2SO4═BaSO4↓+2H2O  中和反应

上一题 下一题 0.0难度 选择题 更新时间:2016-04-27 06:44:03

答案(点此获取答案解析)

C

同类题3

阅读理解

    Denali National Park, Alaska

    History

    Within Denali National Park, the Toklat River will always have a special significance, as it was the location where naturalist Charles Sheldon built a cabin and was so moved that he fought to preserve the land. He moved back east and spent nine years lobbying (游说)to create Alaska's first national park.

    When to Visit

    To avoid the crowds, visit in June, but keep in mind that there are up to 21 hours of sunlight in Alaska in summer. If it seems like a bit much for your taste, try visiting in late August or September.

    If you visit to climb Mount McKinley, May and early June are the best times to climb.

    Major Attractions

    It is difficult not to see Denali's largest attraction towering 20,320 feet high. Mount McKinley can even be seen up to 70 miles away on a clear day. If you brave the climb to the top, you will be rewarded with charming views of the Alaska Range.

    Sable Pass is a prime spot to view grizzly bears. Closed to off-road foot traffic, the area is popular for bears feeding on berries, roots, and even occasionally on other mammals.

    Beginning at just below the summit of Mount McKinley, Muldrow Glacier flows 35 miles through a gorge and across the tundra. Twice in the last hundred years, the Muldrow has surged (涌动), most recently in the winter of 1956-1957.

Accommodation

    Five campgrounds are located within the park, and many are open from late spring to early fall.Note: reservations are strongly recommended during summer. Riley Creek campground is open all year round, and all but two (Sanctuary and Wonder Lake) offer RV (可供居住的大篷车)sites.

    Also within the park are a few lodges (旅馆)—North Face Lodge, Denali Backcountry Lodge and Kentishna Roadhouse.

同类题4

阅读材料,回答问题。
材料一:1911年10月10日,辛亥革命爆发。参加过辛亥革命的老人吴玉章曾经说过
“从前皇帝自称为天子,如果有人说皇帝是强盗,可以打倒,别人一定把他看作疯子。孙中山就曾经是一个被人家看作是疯子的人。相反在辛亥革命以后,如果有人想做皇帝或者拥护别人做皇帝,一定也被看作疯子。”
材料二:在国内,只有少数学生和商人受到他(孙中山)的思想的影响,而广大民众仍
无知、冷漠。当1911年革命到来时,它在一定程度上只是一些省份的地主绅士和商业界的事。                                          ----斯塔夫里阿诺斯《全球通史》
材料三:“夫去一满洲之专制,转生出无数强盗之专制,其为毒之烈,较前尤甚。于是
而民愈不聊生矣!”                          ——摘自孙中山《建国方略·自序》
【小题1】你是如何理解“在辛亥革命以后,如果有人想做皇帝或者拥护别人做皇帝,一定也被看作疯子”的 ?(2分)
【小题2】孙中山先生曾在其《遗嘱》中表达过“革命尚未成功,同志仍需努力”的意思。请利用材料二提供的信息,说明辛亥革命不能成功的的主要原因。(2分)
【小题3】请具体说明孙中山先生所描述的革命后的中国社会现实,并由此解释新文化运动
兴起的必要性。(2分)