题目

We all know that we should use smart study strategies(策略) for learning. __36__ The tipsbelow come from scientific studies. Reduce Your Cell Phone Use It should come as no surprise that spending too much time on the cell phone can affect your grades. __37__ Studies show that there is a relationship between cell phone use, anxiety, and student performance. Increased time on the phone seems to be linked to increased feelings of anxiety,and that leads to lower student performance.__38__ Students who spend more time on phones, in other words, tend to be less active —which also causes a （2008?武威）某班今天出勤47人，事假1人，病假2人，今天的出勤率是多少？