在推挡球时，拍触球时前臂稍向后收是（）A.挡球 B.快推 C.加力推 D.推挤

Louis Armp had two famous nicknames. Some people called him Bagamo. They said his mouth looked like a large bag. Musicians often called him Pops, as a sign of respect for his influence on the world of music.
Born in 1901 in New Orleans, he grew up poor, but lived among great musicians. Jazz had been invented in the city a few years before his birth. Armp often said, "Jazz and I grew up together. "
Armp showed a great talent for music when he was taught to play the comet at a boy’s home. In his late teens, Armp began to live the life of a musician. He played in parades, clubs, and on the steamboats that traveled on the Mississippi River. At that time, New Orleans was famous for the new music of jazz and was home to many great musicians. Armp learned from the older musicians and soon became respected as their equal.
In 1922 he went to Chicago. There, the tale of Louis Armp began. From then until the end of his life, -Armp was celebrated and loved wherever he went. Armp had no equal when it came to playing the American popular song.
His cornet playing had a deep humanity and warmth that caused many listeners to say, "Listening to Pops just makes you feel good all over. " He was the father of the jazz style and also one of the best known and most admired people in the world. His death, on July 6th 1971, was headline news around the world.

Which would be the best title for the text

A. The Invention of the Jazz Music
B. The Father of the Jazz Style
C. The Making of a Musician
D. The Spread of Popular Music

在立杆工作顺序中，杆身调整完后，即可填土。土填至( )后夯实一次。

A．200mm

B．300mm

C．400mm

D．500mm

索引属于_______。

A．模式

B．内模式

C．外模式

D．概念模式

票据和结算凭证的金额，出票或者签发日期、收款人名称不得更改，更改的票据无效；更改的结算凭证，银行不予受理。 ( )

舞中姿态包括合对位舞姿、侧行位舞姿、（）、并肩位舞姿和影子位舞姿。

A、正对舞姿

B、外侧位舞姿

C、左右肩舞姿