题目

阅读理解 Areyou carrying too much on your back at school? You're not the only one. Backexperts in the United States are worried that young students are having backand neck problems as a result of carrying too much in their backpacks(schoolbags). It hurts my back when I run,said Oberlin Reyes, a student in Virginia. It's hard to get up the stairswith my backpack, because it's too heavy. Oberlin is among students whose backpackswere weighed for a week in a recent study. They had regular backpacks with twostraps (带子) to carry them, but anumber of students with heavy loads had switched to 选择并抄写单词 The film called“Computer War”is very ________(excited; exciting)．