阅读下面宋诗，完成各题。

山雨

翁卷

一夜满林星月白，亦无云气亦无雷。

平明忽见溪流急，知是他山落雨来。

    Here comes the last term of Junior 3. Terrible! The big exam is coming in less than two months. You still have a lot to do. How will you spend it? We invited three students to share their stories.
Dou Yi, 15,Beijing
    My chemistry  used to be poor in the past. I got scores of around 40 on every test. During the last term, I decide to beat chemistry. I will start to work hard. In class I take every possible note. After school, I spend most of my time studying chemistry. My parents also ask their friend, a chemistry teacher, to help me . Finally in the latest exam, I got 65! How happy I am!
Wang Zhaolin, 16, Chongqing
    My foot got hurt a week before the big PE exam . Luckily, I recovered（康复） in time. For PE , all you need is to practice. Sports can also help you relax. Be careful not to get hurt as I did.
Wang Feixuan, 15, Xi'an
    My experience is that for Junior3, every minute of the last term is important. Don't waste any of them. I try to remember English words while waiting in line to get my lunch. I read textbooks on the bus to and from school. I work hard at home and sometimes stay up late studying. Want to have fun? Leave it for the summer holiday after the big exam!

许多健康公民积极无偿鲜血。医生给他们抽血时，针刺入的血管是

按课文《蝙蝠和雷达》内容排序。

____研究蝙蝠，发现蝙蝠夜间飞行的秘密。

____模仿蝙蝠探路的方法，给飞机安装雷达。

____发现蝙蝠夜间飞行，还能捕捉飞蛾和蚊子。

____提出问题：飞机怎样才能在夜间安全飞行呢？