【简答题】完型填空。 One day a teacher asked her students to list the names of 1 students in the classroom on two sheets of paper, leaving a space between each name. Then she told them to think of the 2 thing they c...
【单选题】小梅从1楼走到4楼需要3分钟,那么用同样的速度,他从1楼走到7楼需要( )分钟。
【单选题】下列事件可造成食品生物性污染的是( )。
【判断题】桌椅的大小、结构等,应适合于婴幼儿的身材,所以桌椅的配置应以婴幼儿的年龄为依据。
【单选题】一个fcc晶胞的原子中的原子个数为( )个。