题目

Making employees feel happy and healthy at work is good for many businesses. But it isn’t always an easy thing. A study suggests that only 33% of the U. S. employees consider themselves fully engaged （投身于）in work, while 16% are greatly disengaged, and 51% are just showing up.But there is an exception. When it comes to employee engagement, it seems that employees in small companies are doing better. According to the same research, the largest U. S. companies are at the lowest levels of engagement, while companies with fewer than 25 employees are at the highest. And in one recent repX、Y为两种元素的原子，X的阴离子与Y的阳离子具有相同的电子层结构，由此可知（　　） A、X的原子半径大于Y的原子半径B、X的电负性小于Y的电负性C、X的阴离子半径大于Y的阳离子半径D、X的I1小于Y 的I1