【单选题】关于练习蹲踞式跳远的描述错误的是
A.
助跑速度的练习过程中,可反复练习站立式起跑接15-20米加速跑,体会快速放松、节奏稳定的助跑方法
C.
短程助跑起跳腾空步越过横竿,起跳腿迅速前摆成蹲踞式落沙坑
D.
中、全程助跑跳远练习,可先在较宽起跳区练习,再逐步缩小起跳区域
【单选题】该区发展炼铝工业的优势条件是 1环境优美 2能源丰富 3内河航运发达 4亚欧大陆桥经过
【多选题】Which states are true according to Passage A?
A.
Labo's mother suffered from breast cancer, and she survived it.
B.
By saying "if you pour water on flowers, they flourish",Branson's father means criticizing a child helps him/her to make progress.
C.
Branson's father was a successful lawyer.
D.
Lewis tells us that he grew up in an envrionment with very serious racial discrimination.
【单选题】Which of the following about Amys background is INCORRECT?
A.
She was born in Illinois and grew up in California.
B.
She went to a public high school.
C.
She graduated from Yale University.
D.
Her parents were very strict with her.
【单选题】一封闭箱处于恒温环境中,箱内有两杯液体, A 杯为纯水, B 杯为蔗糖水溶液。静置足够长时间后,观察其变化,发现( )。
【单选题】批发商倡导的自愿连锁组织、零售合作社和特许经营组织都属于
【单选题】择性激光烧结技术(SLS)的起源于哪个国家?
【单选题】择性激光烧结技术( SLS )的起源于哪个国家?( )。