（单词翻译:单击）
As a band instructor1 at an elementary school, I require my students to turn in practice sheets signed by their parents so I can be sure they are putting in enough time. I had to laugh, however, when one parent wrote on her child's sheet, "Practiced 17 minutes, but it seemed like hours.
Notes:
(1) band n.乐队(2) instructor n.指挥(3) turn in上交；归还(4) signed by their parents:由他们的父母签名的。这是一个分词短语作定语修饰sheets.
(5) so I can be sure they are putting in enough time:这样我才能确定他们投入了足够的时间。这是so that 引导的目的状语从句，其中that省略。
Exercises:
根据短文判断下列句子正（T）、误（F）：
① The author is a member of the musical band at the elementary school.
② The instructor requires the students to hand in practice sheets once a month.
③ The purpose of the instructor's requirement is to make sure that the students are putting in enough time.
④ One child practiced for several hours, but the parent mistook for only 17 minutes.
⑤ From the passage we can infer2 that the parent is not keen3 on music.
15.犹如几个时辰 作为一个小学的乐队指挥，为了确保学生投入足够的时间练习，我要求他们上交由他们父母签字的练习单。可是有一次，一位家长的签字把我逗乐了。练习单上写着：“练习了17分钟，但犹如几个时辰。”
