题目内容：

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Scientists from the University of Illinois, US, divided several students 1.four groups. The students2.(ask) to do certain tasks involving3.(create) thinking, to different volumes of back-ground noise.

They found that the students did best when 4.(work) under moderate noise-70 decibels(分贝), 5.is about the same level as6.(find) in a cafe. Students did worse in low noise-50 decibels, the volume of a quiet room-and did the7.(poor) when in a high-noise environment-85 decibels, the noise level of a factory.

8.a high level of noise distracts people, moderate noise can9.(actual) increase creativity. “It helps you think outside the box, ”Raci Mehta, a lead researcher in the study, told The New York Times.

However, working in a very quiet place can10.(strong) our focus, and it is good for doing detailed things like proofreading(校对) a paper.