【题目】元素X和Y属于同一个主族。元素X和氢组成的化合物(X显-2价)在通常状况下是一种液体,其中X的质量分数为88.9%;元素X和元素Y可以形成两种化合物。在这两种化合物中,X的质量分数分别为50%和60%,下列说法正确的是( )
A.两种元素分别为C和Si,且酸性:H2CO3>H2SiO3
B.两种元素分别为N和P,且酸性:HNO3>H3PO4
C.两种元素分别为O和S,且酸性:H2SO4>H2SO3
D.两种元素分别是Mg和Ca,且碱性:Ca(OH)2>Mg(OH)2
愉快的寒假南京出版社系列答案科目：高中地理 来源： 题型：
【题目】以下是与高中生物实验有关的内容，请回答下列问题：
（1）脂肪的鉴定中，洗去浮色时常用50%的酒精溶液，是因为 。
（2）在“观察DNA和RNA在细胞中的分布”实验中，将口腔上皮细胞置入8%的盐酸溶液中水解的主要目的是 ，有利于DNA与染色剂结合。
（3）比较过氧化氢在不同条件下的分解，实验的因变量是 。
（4）在用琼脂块模拟细胞大小与物质运输关系的实验中，物质运输的效率可以用 来衡量。
（5）生物组织细胞中某些成分的鉴定和结构的观察，需要选取适当的实验材料、试剂和仪器，下列材料、仪器（试剂）与成分鉴定和结构观察匹配不正确的有（ ）（多选）
A．西瓜汁～斐林试剂～检测生物组织中的糖类
B．嫩绿的菠菜叶～层析液～提取光合色素
C．口腔上皮细胞～健那绿染液～观察DNA在细胞中的分布
D．新鲜菠菜叶～高倍显微镜～观察叶绿体
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科目：高中地理 来源： 题型：
【题目】B
Montgomery County Special Olympics held its eighth yearly show of unified (联合的)basketball at Blessed Sacrament School. The gym was filled with cheerleaders (啦啦队队员), parents and friends. The walls were covered with posters made by thirdandfourthgraders at the school. And all the elementary, middle and high school unified teams were playing hard and having fun. Every basket, no matter which team scores, is cheered and celebrated.
Special Olympics support more than 20 unified games. What are unified games? They are programs designed for players with special needs. In the games, they play with kids who are volunteers, called unified partners. The special athletes are unable to play normally like other healthy kids, and some of them are wheelchair (轮椅) users. In basketball, the unified partners rebound (抢得篮板球), pass and sometimes push a special athlete’s wheelchair. As Brian Ross, a seventhgrader at St. Albans School in Washington, says, ＂You just try to help and get everyone to take part.＂
Some special athletes have come a long way to be where they are. Caleb Head is a 15yearold special athlete. When he started, Caleb would only stand at the door and watch. Then Caleb began to practice his shooting but still would not play in the games. Now Caleb runs up and down looking for his shot.
The special athletes are not the only ones who benefit (受益) from unified sports; the unified partners do, too. Marla Grusin, whose son Tyler is a special athlete, says every kid should come to a Special Olympics
Not a bad lesson for any athlete.
【1】The first paragraph is about____________.
A. the meaning of unified games
B. Special Olympics’ development
C. the benefits of playing basketball
D. an exciting unified basketball game
【2】Special Olympics are especially held for students who____________.
A. are disabled
B. love cheerleading
C. know little about ball games
D. want to become a star player
【3】 According to the text, Brian Ross is most probably____________.
A. a cheerleader B. a special athlete
C. a unified partner D. a basketball teacher
【4】According to Grusin, taking part in Special Olympics games can help children____________.
A. learn basic basketball skills
B. become more selfless
C. improve their health
D. get better grades
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科目：高中地理 来源： 题型：
【题目】It was probably at that moment _____ I understood what kindness really was.
A. that
B. when
C. which
D. what
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科目：高中地理 来源： 题型：
【题目】听一段材料，回答下面几个小题。
【1】How does Steven describe his music?
A. It’s hard rock.
B. It’s folk music.
C. It’s modern pop.
【2】Why does Steven love Australian audiences?
A. They never throw things at him.
B. They buy more of his records.
C. They are more friendly.
【3】What’s Steven’s attitude towards people downloading his music?
A. He doesn’t mind.
B. He feels upset.
C. He is puzzled.
【4】What advice does Steven give to songwriters?
A. Listen to more music.
B. Stick to their own style.
C. Make use of the Internet.
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科目：高中地理 来源： 题型：
【题目】完成句子
1. They talked so much ________ ________ they ________ friends.
他们谈了很多就好像是朋友似的。
2. ________ ________, you should be honest with me.
最重要的是，你应该对我说实话。
3. He likes ________ ________ ________ others.
他喜欢开别人的玩笑。
4. We must ________ ________ the good apples from the bad ones.
我们必须把好苹果与坏苹果分开。
5. He ________ ________ ________ ________ the pool.
他把手浸入池子里。
6. Believe it or not, I don’t like _______________________he spoke to me.
信不信由你，我不喜欢他对我讲话的方式。
7. He borrowed a book the other day, _______________________ is a worker.
那天他借了一本书，书的作者是一名工人。
8. Thank you for your help, _______________________we could not have finished the work on time.
感谢你的帮助，没有你的帮助我们不可能按时完成工作。
9. Who do you suppose is the man _______________________ our teacher is talking?
你知道正在和我们老师谈话的人是谁吗？
10. The reason _______________________ I bought the roses is that Mary likes them.
我买玫瑰的原因是玛丽喜欢。
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科目：高中地理 来源： 题型：
【题目】听一段材料，回答下面几个小题。
【1】Why will the woman be late?
A. She didn't catch the train.
B. She didn't finish her paper.
C. She didn't wake up in time.
【2】Where is the man?
A. At the station. B. At home. C. At the office.
【3】What is the probable relationship between the two speakers?
A. Teacher and student. B. Parent and child. C. Husband and wife.
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科目：高中地理 来源： 题型：
【题目】听一段材料，回答下面几个小题。
【1】Who is visiting the woman for the weekend?
A. Her brother.
B. Her student.
C. Her teacher.
【2】How does the woman know Ann?
A. She has just been introduced to her.
B. She has taken piano lessons from her.
C. They have met at a party before.
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科目：高中地理 来源： 题型：
【题目】听一段材料，回答下面几个小题。
【1】Where and when is the romantic book set?
A. In China in the 1920s.
B. In China in the 1930s.
C. In England in the 1930s.
【2】What type of book is the third book?
A. A biography.
B. A historical book.
C. A sports novel.
【3】Where could you hear this passage most?
A. On the radio.
B. In the class.
C. At a meeting.
【4】Who are the main characters of the science fiction?
A. A group of soldiers.
B. A group o sailors.
C. Two young people.
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