题目

语法填空 I like sports and I’m good at (1)    (play) basketball. Every day I practise basketball (2)  my classmates after school. I also enjoy (3)      (listen) to music and reading science books, (4)      I can’t sing (5)     (good) and I don’t have enough time (6)     (read) books. I’m afraid (7)    singing in front of people. I hope our school will start a singing club. I’m sure I can make great progress(进步) (8)    the help of our teachers. I also hope there will be (9)    (little) homework on weekends. Then I can have more time to r5月～7月是手足口病高发期，手足口病是由肠道病毒引起的传染病，多发生于5岁以下儿童，可引起手、足、口腔等部位的疱疹．治疗手足口病的常用药物是阿昔洛韦（化学式为：C8H11N5O3）．请计算：（1）阿昔洛韦（C8H11N5O3）由______种元素组成．（2）阿昔洛韦中碳元素和氮元素的质量比为______．（最简比）（3）100g阿昔洛韦中含氮元素的质量为______g（计算结果保留0.1g）