【推荐1】In doing scientific e___________, one must be more than careful with the instruments. (根据首字母单词拼写)

【推荐2】After the____(实验), everything is put in order in the cupboard. （根据汉语提示单词拼写）

【推荐3】Scientists are doing a series of ________ (实验) to prove it. （根据汉语提示单词拼写）

【推荐1】He does not want to interfere(干涉) in the internal ________ (事务) of another country. （根据汉语提示单词拼写）

【推荐2】It’s a _______(奢侈的事) to eat fresh food, because fresh produce such as fruit and vegetables can only be delivered to the space station from the Earth every couple of months. (根据汉语提示单词拼写)

【推荐3】We spent two hours analyzing the team’s ________（强项）and weaknesses.