题海网，海量题库；找题库、找试卷、找答案就上题海网。

粮库中为了将储存的粮食保持更长的时间，可采取以下条件中的哪一项

如图所示，木块B静止在水平地面上，木块A叠放在B上．A的左侧靠在光滑的竖起墙面上．关于A、B的受力情况，下列说法中正确的是（   ）

阅读材料，回答问题。

材料  武昌起义爆发后，为挽救垂危的统治，清政府资政院（带有国会性质的机构）仅用三天就起草了《宪法重大信条十九2条》，简称《十九信条》，采用英国虚君共和制模式，皇帝权力大大缩小，国会与责任内阁权力大为增强。皇帝之权以宪法所规定者为限，皇位继承顺序也由宪法规定，宪法由资政院起草议决，由皇帝颁布，国会议员由国民公选。总理大臣由国会公举，皇帝任命。国会有权弹劾总理，总理也有权一次性解散国会。

——整理自王立民《中国法制史》

已知向量 ， 满足| |=5，| |=3，| ﹣ |=7，则 • =．

某无色溶液中大量存在的离子仅有SO₄^2﹣、Cl^﹣和X，则X可能是（  ）

人体不会发生的物质运输过程的是（   ）

—Where do you live?

—_______________

原子序数依次增大的四种短周期元素X、Y、Z和W，元素X的最高正价与最低负价的代数和等于0；元素Y的最高价氧化物对应的水化物可与其最常见气态氢化物反应生成离子化合物；Z元素与Y、W均相邻，Y、Z、W三种元素的原子最外层电子数之和为17。下列说法错误的是（    ）

《人民日报》载文，要扎扎实实推进服务型政府建设，全面提高为人民服务的能力和水平。从历史唯物主义角度看，这体现了（    ）

There is a lot of _______________ on the ground. It _______________ heavily last night.

一位亲眼见过俄国炮兵的外国军官感叹说：“欧洲没有一个国家的炮兵能达到俄国炮兵的水平。”那么彼得一世采取了哪些措施实现了强兵（    ）

26岁的女兵班长苏培杰，每天执勤巡逻，不仅要穿戴20公斤重的防弹护具，忍受高达40摄氏度的气温，还要面对不时响起的枪声。她说：“南苏丹现在还在战乱中，老百姓盼望和平。能为他们作出一点人员贡献，我感到很自豪。”像苏培杰样的中国维和人员（    ）

①为提高中国在国际上的影响力作出了重要贡献

②是维护区域安全与稳定的重要力量

③展现了人类共同面临的各种问题中国作为国际秩序维护者的大国形象

④解决了人类共同面临的各种问题

阅读下面材料, 从每题所给的A, B, C, D四个选项中选出最佳选项。

B

    A small, white envelope(信封) stuck among the branches of our Christmas tree and it has been there for the past ten years or so.

    It all began because my husband Justin hated Christmas—oh, not the true meaning of Christmas. Overspending was one thing, but compared to the difficult experience of choosing gifts—running around at the last minute to get a tie for Uncle Harry and a pair of gloves for Grandma…… spending money is nothing. I felt too tired to think of any special gifts.

    Knowing Justin felt the same way, I decided one year not to buy the usual shirts, sweaters, ties and so on. I reached for something special just for Justin. The inspiration came in an unusual way.

    Our son Kevin, who was 12 that year, was wrestling(摔跤) at the junior level at the school he attended; and shortly before Christmas, there was a match against a team sponsored(赞助) by an inner-city church. These youngsters, dressed in such worn out shoes that shoe strings seemed to be the only thing holding them together, while our boys were in their blue and gold uniforms and new wrestling shoes.

    As the match began, I was shocked to see that the other team were wrestling without wearing helmets(头盔) to protect their ears. Well, our boys ended up defeating them. We took every weight class.

    Justin, seated beside me, shook his head sadly, "I wish just one of them could have won," he said. "They have a lot of potential(潜力), but losing like this could take the heart out of them." Justin loved kids-all kids, and he knew them, having coached little league football and baseball. That's when the idea for his present came. That afternoon, I went to a local sporting goods store and bought different kinds of wrestling helmets and shoes. I sent them to inner-city church without leaving my name.

    On Christmas Eve, I placed the envelope on the tree, the note inside telling Justin what I had done and that was his gift from me. His smile was the brightest thing about Christmas that year and since then the envelope has become the highlight of our Christmas.

求下面多边形的面积。

下列各项中，属于生物的是（    ）

swimming， Zip ，often，the，water， in ， goes.（连词成句）

小明构思了下列方木立柱与地面之间的连接件方案。从结构强度和安装角度考虑，下列方案中最合理的是（   ）

1931年11月，中华苏维埃共和国在江西瑞金成立，1937年9月，中华苏维埃共和国更名为“中华民国陕甘宁边区政府”。这一变化（    ）

三位数乘一位数，积可能是（    ）

假如你叫Judy，是北京的一名学生。Helen是你新结识的网友。最近你收到她的一封电子邮件，请根据她的来信内容给她写封回信。

要求：①针对来信内容回复，可以适当发挥；

②回信的开头与结尾已给出，不计入总词数。

Dear Judy,     I'm glad to be your e-friend. My name is Helen. I'm from New York, the US. Can I ask you some questions? Where do you live? How old are you? What do you look like? What is your hobby? Which season (季节) is your favorite? Why do you like it? I have so many questions. But the most important is what your dream job is. My dream job is to be a pilot(飞行员)when I grow up.     Please write to me soon. Yours, Helen

 

Dear Helen,     I'm glad to be your e-friend too. Now Let me answer all your questions.         Hope to get your next email soon. Yours, Judy