【单选题】Jazz has its roots in American folk tradition,mainly in the music of ( )
【单选题】Jazz has its roots in the following EXCEPT __________.
A.
West African musical culture
B.
African American music traditions
C.
European military band music
D.
American native Indian music
【单选题】Jazz has its ______ in the folk songs of the southern states of the US.
【单选题】Jazz has its ______ in the folk songs of the southern states of the US.
【多选题】正面双手上手传球的动作方法是
A.
正面双手头上传球主要依靠手指手腕控制和调整球的能力和上下肢的协调配合。
B.
通过双手手指触球,然后蹬地、伸膝、伸髋、伸臂,最后用手腕和手指的弹性将球传出。
C.
传球前正面对准来球,采用稍蹲准备姿势,两手自然张开成半球形,手腕、手指在额前上方约一球处推、弹球的后下方,当球接近额前时开始蹬地、伸膝、伸臂,两手微张,从脸前向前上方主动迎击来球,击球点应保持在额前上方约一球远,击球部位一般在球的后下方。
D.
注意上肢的推、弹动作要与下肢蹬、伸协调一直。
【单选题】物体在负透镜物方任何位置,都会成( )像。
【判断题】航空器设计国应确保对于最大核准起飞质量超过 5700kg 的飞机有一个连贯的结构完好性方案以确保飞机适航,该方案必须包括防腐蚀的具体资料。只要防腐蚀工作做得好,抗腐蚀资料不做必须要求。
【简答题】Jazz has its roots ______ the folk songs of the southern states of the United States.
【单选题】According to the passage,
A.
the problem of student cheating has its roots in deeper problems
B.
students do not cheat on essay tests
C.
a change in the educational system will eliminate the need to cheat
D.
punishment is an effective method of stopping cheating