题目内容

游泳呼吸技术上应注意以下哪些方面

A. 吸气要充分，吸气动作要快
B. 吸气要充分，吸气动作要拉长
C. 在吸气后要有一个短暂闭气阶段，然后开始呼气
D. 呼气相对较慢，呼气后紧接着吸气，中间不宜停顿
E. 吸气时头部和上体宜抬得过高
F. 吸气时头部和上体不宜抬得过高

查看答案

搜索结果不匹配？点我反馈

更多问题

土坡的稳定程度通常用（）来衡量。

Cyril had a lot of azaleas in pots. I picked ____ a big red one just coming into bloom.

A. up
B. out
C. of
D. into

He ____ a lot lately, he ought to give up smoking.

A. coughed
B. was coughing
C. coughs
D. has been coughing

They only have twenty crayons to ____ .

A. color with
B. be colored
C. corlor
D. being colored