求一段选词填空解释,
问题描述：
求一段选词填空解释,
It is thought that if the brain is busy focusing on many aspects of a task,it has to ____ its resources,and pays less attention to the clock.______,time passes without us really noticing it.
第一个空填spear还是focus,第二个空填however还是therefore,
答
有说法认为,在某项工作中大脑忙于关注于多方面内容,它不得不分散它的资源,并且在每个点的注意力就减少了.因此,时间流逝了我们也没注意到.
所以,第一个要填spear,第二个填therefore