参考答案：1．B【分析】因为0＜a＜1，可采用举例验证的方法解决，假设a＝12，然后计算出a、2a、1a的数值，再按从小到大的顺序进行排列即可解决。
【详解】假设a＝12，则：1 a ＝1÷12＝2 2a＝12×12＝141 4＜12＜2故答案为：B【点睛】此题考查数的大小比较，解决关键是根据a大于0而小于1，赋予a一定的数值，把a表示的数值代入每个式子算出数值，进而比较问题得解。
2．C【分析】根据圆的面积公式：S＝πr2，据此求出变化前后圆的面积，再相减即可。
【详解】π×62－π×32＝36π－9π＝27π则它的面积比原来增加了27π平方厘米。
故答案为：C【点睛】本题考查圆的面积，熟记公式是解题的关键。
3．D【分析】观察图形可知，以最左边的第1个图形为基础，每增加3根小棒就增加1个正方形，如摆第1个图形的小棒数量是（3＋3）根，摆第2个图形的小棒数量是（3＋3×2）根，摆第3个图形的小棒数量是（3＋3×3）根，⋯⋯由此可知，摆第7个图形需要的小棒数量是（3＋3×7）根，计算出结果即可。
【详解】根据分析得，3＋3×7＝3＋21＝24（根）即摆第7个图形需要24根小棒。
故答案为：D【点睛】本题考查数形结合问题，观察图形，发现图形的个数与小棒根数的关系是解题的关键。
4．B【分析】比的基本性质：比的前项和后项同时乘或除以相同的数（0除外），比值不变。
根据比的基本性质，A∶B＝18，前项A和后项B同时乘8，比值不变。
【详解】A∶B＝18，那么（A×8）∶（B×8）＝18。
故答案为：B【点睛】掌握比的基本性质及应用是解题的关键。
5．B【分析】根据三角形内角和180度，利用按比例分配的方法求出最大角的度数，从而根据最大角的度数就能确定其形状。
【详解】180°×3123++＝90°90°的角是直角，有一个角是直角的三角形是直角三角形。
春季开学摸底检测卷六年级英语题号一二三四五六七八九总分得分一、单选题1．How can I get ______ the park? ( )A．on B．in C．to2．—Where are you from? ( )—________A．I’m from China.B．I’m from Chinese.C．She is from China.3．My school isn’t very far, so I go to school by ________. ( )A．bike B．plane C．train4．I usually ________ to school ________ foot. ( ) A．going; with B．goes; at C．go; on5．I want ______ a map of China. ( )A．is buying B．to buy C．buy6．—_____ are you going? ( )—Next Tuesday.A．When B．What C．Where7．—What’s your mother’s hobby? ( )—_______A．She goes to work on foot.B．She works in a hospital.C．She likes singing.8．My sister ______ hiking. ( )A．like going B．likes going C．likes goes9．My grandpa _______ some exercise every day. He has a _______ life. ( )A．does; difficult B．does; healthy C．do; healthy 10．You are ill. You should _______. ( )A．see a doctor B．wear warm clothes C．count to ten 二、英汉互译：单词/短语1．traffic lights ____________2．slow down _______________ 3．get together _____________ 4．police officer ______________ 5．count to ten _____________6．担心的 _______________ 7．渔民 _______________ 8．工人 _______________9．单词 _______________ 10．谜 _______________三、词形转换1．coach (复数) _______ 2．sea (同音词) _______ 3．postman (对应词) _______ 4．chasing (原形) _______ 5．do (单三) _______四、句子匹配A．I’m going to see a film.B．Yes, she does.C．It’s near the bookstore.D．You should wear warm clothes.E. He is a police officer.1．I feel cold. ( )2．What does Mike do? ( )3．What are you going to do? ( )4．Where is the zoo? ( )5．Does Sarah want to be a teacher? ( )五、排序题A．She works at a university.B．Hello, Mary. Who’s that beautiful woman?C．By car.D．She’s my mother. She’s a scientist.E. Great! I want to be a scientist, too! Where does she work?F. And how does she go to work?正确顺序：1. ______→2. ______→3. ______→4. ______→5.______→6. ______六、选内容补全对话/短文Amy: John, who’s this man?John: ___________Amy: Does he live in Hainan now?John: ___________ He lives in Australia.Amy: What does he do?John: ___________ He works very hard.Amy: What are his hobbies?John: ___________Amy: Do you want to be a businessman?John: ___________ I want to be a teacher.A．No, he doesn’t.B．He likes going hiking.C．He’s a businessman.D．No, I don’t.E．He’s my uncle.七、连词成句1．are, to, draw, we, going, pictures, some (.)_______________________________________________________ 2．slow, down, and, a, at, stop, yellow, light (.)_______________________________________________________ 3．does, she, work, to, how, go (?)_______________________________________________________ 4．see, a, film, I, going, to, am (.)_______________________________________________________ 5．should, warm, wear, you, clothes (.)_______________________________________________________八、阅读选择Dear Mark,How are you?I am so glad to be your pen pal. Now let me introduce myself. My name is Chen Jie. I am 12. I live in Beijing China. I know you are interested in Chinese. I feel so happy to let you learn about China.Pandas are my favourite animals. They are cute and shy. They are black and white. They like to eat bamboo. So most of them live in Sichuan.Do you like food? We have many kinds of traditional(传统的) food. On Spring Festival, we have dumplings. On Dragon Boat Festival, we have zongzi. On Mid-Autumn Festival, we have mooncakes. They are all delicious.If you come to Beijing, I will take you to the Great Wall. It is a very long wall. I will take you to the Palace Museum(故宫). You can learn about the ancient(古代) Emperors’ lives(皇帝的生活).I hope you will write to me soon.Yours,Chen Jie 1．The letter is from _______. ( )A．Chen Jie B．pen pal C．Mark2．The letter is to _______. ( )A．Chen Jie B．pen pal C．Mark3．Where do pandas live? ( )A．The Great Wall. B．The Summer Palace. C．Sichuan. 4．We have _______ on Mid-Autumn Day. ( ) A．zongzi B．dumplings C．mooncakes 5．What are pandas’ favourite food? ( ) A．Dumplings. B．Mooncakes. C．Bamboo.九、阅读判断Look, this is my pen pal Alice. She lives in Australia. She likes swimming and doing word puzzles. She has a brother. He likes playing football very much. He wants to be a football player. Alice is going to have a picnic this weekend. She feels happy. She is going to the supermarket to buy some food for the picnic. The supermarket is far from her home. She is going to get there by bus. After that, she is going to visit her grandparents. They’re going to see a film tonight.1．Alice lives in Australia. ( )2．Alice likes playing football. ( )3．Alice has a brother. ( )4．Alice is going to see a film this afternoon. ( ) 5．Alice is going to the supermarket by bus. ( )参考答案：一、单选题1．C 2．A 3．A 4．C 5．B 6．A 7．C 8．B 9．B 10．A二、英汉互译：单词/短语1．交通信号灯2．慢下来3．聚会4．警察5．数到十6．worried 7．fisherman 8．worker 9．w ord 10．puzzle三、词形转换1．coaches 2．see 3．mailman 4．chase 5．does四、句子匹配1．D 2．E 3．A 4．C 5．B五、排序题B D E A F C六、选内容补全对话/短文1．E 2．A 3．C 4．B 5．D 七、连词成句1．We are going to draw some pictures.2．Slow down and stop at a yellow light.3．How does she go to work?4．I am going to see a film.5．You should wear warm clothes.八、阅读选择1．A 2．C 3．C 4．C 5．C 九、阅读判断1．T 2．F 3．T 4．F 5．T。
德江县合兴镇完小六年级数学摸底考试卷时间：100分钟 满分：100分题号 一 二 三 四 五 六 总分 得分一、想想填填。
（每空1分，共20分。
）1、根据第六次全国人口普查统计，截止2010年11月1日零时，我国全国总人口数 超过1370536875人。
将这个数改写成用“亿”作单位是（ ）亿，省略亿后面的尾数约是（ ）亿。
2、一个九位数，它的最高位上是最小的质数，万位上是最大的一位数，千位上是最小的合数，十位上是最小的奇数，其余数位上都是零。
这个数写作（ ）；读作（ ）。
3、5.7634634······是（ ）循环小数，用循环节简写的方法记作是（ ）。
4、35 的分数单位是（ ），再添上（ ）个这样的分数单位就是最小的合数。
5、15和18的最大公约数是（ ），最小公倍数是（ ）。
6、50比40多（ ）%，40比50少（ ）%。
7、大圆与小圆的直径比是3：2，大圆与小圆的周长比是（ ），面积比是（ ）。
8、在比例尺是1：6000000的地图上，量得南京到北京的距离是15厘米，南京到北京的实际距离是（ ）千米。
9、三个连续自然数的平均数是15，第一个数是（ ），第三个比第一个（ ）。
10、行一段路程，甲车要1.2小时行完，乙车要1.5小时行完。
甲车和乙车速度的最简整数比是（ ）。
11、2.4时=（ ）分 1平方千米=（ ）平方米 二、明辨是非。
（对的画“√”，错的画“X ”，每小题1分，共5分。
） 1、含有未知数的等式一定是方程。
（ ）2、总价一定，数量和单价成反比例。
（ ）3、线段、角、等腰三角形和圆都是轴对称图形。
（ ）4、两个面积相等的三角形可以拼成一个平行四边形。
（ ）5、假分数的倒数小于1。
（ ） 三、精挑细选。
（将正确答案的序号填入括号里，每小题2分，共10分。
） 1、10克放入500克水中，这时盐和盐水的比是（ ）。
