美国哲学家杜威认为,实践就是人类应对环境的一种活动,这种活动和动物适应环境的活动相比,只有高下程度的差异,没有本质区别。这一说法( )①否认了实践具有客观物质性②认为人和动物的活动是完全一致的③否认了实践具有主观能动性④否认了实践具有社会历史性
Now an increasing number of middle school students go abroad for further study at their own ________, trying hard to realize their dreams.
When somewhat better ________ academically, he returned home to continue his research.
This new teaching approach is specially ______ to develop children’s problem-solving skills.
The opening ceremony of Beijing 2008 Olympics is a great success, which is believed ________ the Chinese splendid civilization.
A good speaker is supposed to manage to ________ the listeners what he means.