若点P(2m+4,3m+3)在x轴上,则点P的坐标为 _________

题型:填空题

问题:

若点P(2m+4,3m+3)在x轴上,则点P的坐标为 _________

考点:用坐标表示位置
题型:填空题

男性,37岁。肛门旁反复疼痛、红肿伴流脓5个月。查体:距肛门缘3cm的皮肤上可触及一直径1cm的硬结,挤压后有少量脓血样分泌物流出,沿硬结于皮下可触及长约3cm的索条状物伸致肛管内。

该病人最可能的诊断是().

A.肛门周围癌

B.外痔

C.肛瘘

D.肛裂

E.皮质腺囊肿

题型:填空题

下列各物质在空气中的体积分数,约占21%的是(  )

A.氮气

B.氧气

C.水蒸气

D.二氧化碳

题型:填空题

WHAT do you have to look forward to at the end of the year? Preparing for final exams? Homework? Not to worry: Life can’t be all sweating over textbooks – that’s why Hesuipian, or the “New Year film” was invented. In China as in the West, December is a time for exciting movie releases (上映) with the world’s top stars.

Treasure Hunter (《刺陵》),December 9

What has Jay Chou been working on? See this action-packed fantasy adventure and find out.

In the movie, Chou becomes a Chinese version of Indiana Jones. He is given a map of buried treasure, but forced to give it up in return for the life of the daughter of his mentor (导师), played by top model from Taiwan, Lin Chiling. Joined by a famous archeologist, the three go on a thrilling journey to find the map and then the treasure.

A Simple Noodle Story (《三枪拍案惊奇》), December 11

After masterminding (策划) the Opening Ceremony of the Beijing Olympics, director Zhang Yimou has turned to something smaller – as the title of this movie suggests. The comedy-thriller is the story of a mean  noodle shop owner who hires  a killer to murder his wife and her lover. Xiao Shenyang is not the only comedic element in the movie. Zhang’s contribution of the theme song – he penned the lyrics and rapped – is another highlight.

Sherlock Holmes (《大侦探福尔摩斯》), December 25

The immortal (不朽的) Sherlock Holmes is a character who appeals to each new generation. His magnifying glass and ever-present pipe  make him a figure you couldn’t mistake for any other detective. In this new movie he shows he has another string (琴弦) to his violin bow – he’s also a kungfu master! Along with his faithful partner Watson, he has to stop a plot to destroy Britain.

60. From the passage we know_______.

A. New Year blockbusters are usually released in December around the world.

B. Final exams usually happen in December.

C. Treasure Hunter will be shown on Christmas.

D. Sherlock Holmes is a character who appeals to only new generation

61. Which is NOT RIGHT According to the passage?

A.  Jay Chou becomes a co-operator in China of Indiana Jones

B. The journey to find the map and the treasure is thrilling .

C. Lin Chiling is a top model from Taiwan.

D. Xiao Shenyang stars in the film A Simple Noodle Story

62.“A Simple Noodle Story” is _______________

A. a tragedy-thriller    B.  a comedy  C. a comedy-thriller  D. an action movie

63. What is the meaning of "another string to his violin bow" ?

A. his violin in need of another string

B. his talent and skill unknown to the public

C. his being good at playing the violin

D. his skills for his detection

题型:填空题

某研究性学习小组学习了工业“侯氏制碱法”的原理后,知道如下反应:

NaCl + NH3 + CO2 + H2O = NaHCO3↓+ NH4Cl 。

【提出问题】能否在实验室模拟“侯氏制碱法”制取NaHCO3的过程呢?

【实验验证】如下图是该学习小组进行模拟实验时所用到的部分主要装置和药品。

请回答下列问题:

⑴ 检验A装置气密性的方法是:塞紧带长颈漏斗的橡胶塞,夹紧弹簧夹后,从漏斗注入一定量的水,使漏斗内的水面高于试管内的水面,停止加水后,若                                        ,说明装置不漏气。

⑵该实验中用B装置制取的气体是              (填化学式),B装置中盛装浓氨水的仪器名称为          ,本实验中使用该仪器的优点是                                           

⑶D是连接在装置A与装置C之间的气体净化装置,进气口是       (填a或b),D的作用是除去HCl气体,反应的化学方程式为                                   

⑷实验时先向饱和NaCl溶液中通入较多的NH3(溶液显碱性),再通入足量的CO2,其原因是              (填写序号)。

① 使CO2更易被吸收   ② NH3比CO2更易制取    ③ CO2的密度比NH3

⑸用                        的方法将生成的NaHCO3晶体从混合物中分离出来。

【得出结论】利用“侯氏制碱法”在实验室可以制取NaHCO3

题型:填空题

社会阶层主要是指()

A.受教育经历

B.经济阶层

C.居住区域

D.家庭环境

E.以上都不是

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