题目

完形填空 As a new high school student now, I will study hard to make my dream come true. I am going to be a _1__ like Clare Lentz who impressed(留下深刻印象) me a lot. I met a very kind teacher called Sr. Clare Lentz when I was in Grade Seven in a middle school. She taught me __2__. She was very kind to us. Here is what happened. I was not a(n) __3____student because I was not interested in working too hard. Most of my classmates didn’t like to _4_ with me. One morning, we had a math test. I knew I didn’t do ___5__ after the exam. In the afternoon, she gave the paper back欲配制100mL 1.0mol/L Na2SO4溶液．计算：①需要Na2SO4质量是多少？②取出10mL上述溶液，其中含Na+的物质的量为多少？