鱼在水中游泳时能够保持身体平衡，主要靠下列哪组鳍的作用？（）
A.胸鳍和腹鳍
B.背鳍和尾鳍
C.尾鳍和臀鳍
D.胸鳍和尾鳍
参考答案：A
She always looks_________. Now she's looking ________ at her new drawing. [ ]
A. happy; happy
B. happy; happily
C. happily; happily
D. happily; happy
试论在思想政治工作中如何根据教育对象的气质类型因材施教？
