工作许可人有哪些主要职责？

Hip hop, or rap music as it's also called, started on the streets and in the clubs of New York City in the 1970s, but today many countries have their own kind of hip hop music, This kind of music has its roots in reggae，disco and funk music. Rapping, which speaking to the rhythm of the music，is an important part of this music. Young people rap to express how they feel about their lives and problems.

Would you like to rap in class? Well actually, hip hop music is being played in more than 10,000 schools in the USA. Why? There is a new school programme called "Flocabulary" where teachers use text books and hip hop CDs to help teach a variety of school subjects.  The lyrics of the songs include information on a subject students are studying, which makes learning easy and fun  Students and teachers are amazed at the positive effects it has had on exam marks. This is one teacher said: "I've used hip hop songs in class, and I've never seen students have such interests in history!  It's unbelievable how students remember what I teach it even encourages us towrite our own songs.

Blake Harrison, a high school student, first thought of the idea of Flocabulary. The word "Flocabulary" comes from the words "flow" and "vocabulary". "Flow" is a rap word for "style" or the way a rapper says the words of a song. How did he get the idea'? Well he realized he could remember the lyrics of a hip hop song very easily.  So, why not make lessons into songs'? Today together with Alex Rappaport, a composer, Blake produces hip hop songs for maths .science and literature, which are now being used in schools with great success.

Paragraph One    Hip hop music started in New York City in the 1970s. It comes

from小题1: reggae, disco and funk music.

Paragraph Two    Rapping in schools is_小题2:___ in the USA because of the programme

Named "Flocabulary". The songs include information on a subject

students are studying, which makes 小题3:

Paragraph Three  A high school student named小题4:___first had the idea of Flocabularv.

Now he produces hip hop songs for many subjects in order to_小题5:.

据《素问.至真要大论》的内容，“热之而寒者取之阳”是（）。

A.温补肾阳

B.健脾祛湿

C.辛温解表

D.滋阴补肾

E.益气养阴

烧结普通砖的强度等级是按（）来评定的。

A、抗压强度及抗折荷载

B、大面及条面抗压强度

C、抗压强度平均值及单块最小值

D、抗压强度平均值及抗压强度标准值

在MR上下列哪种肿瘤无化学位移伪影()

A.脂肪瘤 

B.畸胎瘤 

C.胆脂瘤 

D.神经鞘瘤 

E.皮样囊肿 

培育新品种的目的是什么？