The two companies decided to work together ______ they had common interest.
A:because
B:unless
C:but
D:or
—Could you tell me_ it's polite to eat noisily in Japan, Kumiko?
—Sure! It's polite to do that. It means you like the food very much.
阅读下面一段文字,根据拼音写出汉字。 大自然是多情的。南归的燕子带来春的柔情,翻滚的麦浪xié来夏的chì烈,飒飒的秋风送来秋的爽朗,纷飞的白雪飘来冬的欢畅。于是,草长莺飞间,鸟啼虫鸣间,山luán苍松间,我们用心聆听天lài。
如图,AB=AC.若利用“边角边”来判定△ABE≌△ACD.则需要添加的一个直接条件是____ .