不需要进行变应原检查的疾病是（）。 A．变应性鼻炎 B．食物过敏 C．药物过敏 D．

Hip hop or rap (说唱） music as it is also called, started on the street and in the clubs of the New York City in the 1970s . But today many countries have their own kind of  hip hop music . This kind of music comes from reggae, disco and funk music . Rapping means speaking to the  rhythm of the music, and it is an important part of the music . People rap to express how they feel about their lives and problems .

Rapping in class.

Would you like to rap in class? Well actually, hip pop music is played in more than 10,000 schools in the USA .Why ? There is a new school program called “ Flocabulary ”in which teachers use texts and hip hop CDs to help teach different school subjects . The words of the songs are just what students are studying . This makes learning easy and fun . Students and teachers are excited about the positive results it has had on exam marks . One teacher said, “ I’ve used hip hop songs in class, and I have never seen my students so crazy about history ! You can't imagine how well they imagine how well they remember what I teach ! We even try to write our own songs . ”

Whose idea was Flocabulary?

Blake Harrison, a high school student, was the first person to come up with the idea of Flocabulary . The word “ Flocabulary ” comes from the word “ flow ” and “ vocabulary ” . “ Flow ” is a rap word for “ style ”,or the way a rapper says the words of a song . “ Vocabulary ” means the words you have to learn in a language . How did he get the idea ? Well, he realized he could remember the words of a hip hop song very easily . So,why not make lessons into songs ? Today together with Alex Rappaport, a song writer, Blake produces hip hop songs for maths, science and literature (文学）. They are now used in schools with great success .

小题1:Rap music started  _____ in New York city .

A．in the 1970s

B．In a high school

C．in the 19 th century .

D．In a music class .小题2:From the passage, we can learn “ Flocabulary ” is a program to _____ .

A．Write rap music .

B．Sing a song by talking

C．Remember the words of a song .

D．help teach some school subjects.小题3:The underlined word  positive  in paragraph 2 most probably means _____ 

A．bad

B．good

C．final

D．direct小题4:Blake Harrison has produced hip hop songs for school subject EXCEPT _____ .

A．maths

B．science

C．history

D．literature

8255A端口C按位置位/复位控制字的()位用来指定要置位或复位的端口C的具体位置。

A．D4、D5、D6

B．D1、D2、D3

C．D0、D1、D2

D．D5、D6、D7

精致公司主要生产各种型号的汽油发动机和柴油发动机，产品研发任务主要由其内部的中心研究所承担。该所分为基本件室、缸体室、燃烧室、测试室、电气室、计划室和所长办公室等部门。你认为下列何种情况出现时，该所的部门设置方式和组织结构最有必要调整的是______。

A．中心研究所的职能发生重大的变化，增加了包括行业技术信息的搜集分析、市场动态分析、为产品售后服务提供技术支持等新职能。
B．所长的人选进行了更换，新所长精通管理，尤其是组织管理方面的技能。
C．企业准备压缩人员，中心研究所也准备转出去一部分富余人员。
D．企业主产品更换了商标。

人类语言活动中，喉为（）

A.动力器官

B.振动器官

C.共鸣器官

D.吐字器官

E.以上都不是

液压系统振动的解决方法有哪些？