根据对话内容，从下面方框中选择适当的单词或短语填空，使对话内容完整正确。

A: Hello, nice to see you again.
B: Me too.
A: How is your holiday?
B: Great! I had a ____  holiday. I traveled to Japan with my parents.
A: Really? What did you see there?
B: I saw a lot of ____  ,such as Mount Fuji and Sanrio Puroland. Mount Fuji is so wonderful    that all of us want to climb up to the top. And Sanrio Puroland is the Hello Kitty’s land. We also  visited the Hello Kitty’s house. How lovely it is!
A: You must have a great time.
B:____  . How about you? What were you doing  ____  ?
A: I didn’t ____  . But I had a good time staying at home .I read a lot of books.
B: Oh, that’s interesting . It’s time to have lunch. I have to go. Bye.
A: Bye.

手机已经成为了人们日常必备品之一，低头看手机的“低头族”随处可见（图甲）．有研究发现，若玩手机时姿势不当，可能让颈椎承受多达27公斤的重压．为求证这一问题，某同学查阅相关资料，画出了“低头族”头部前倾某一角度时的模型（图乙），颈椎看成轻杆，颈部肌肉看成轻绳，头部看成质点，所受重力已标出．请在答卷的图丙中用平行四边形定则作出重力与颈部肌肉对头部拉力的合力，并根据所作的图测量颈椎承受的压力是头部重力的倍．（保留两位有效数字）

①中学生应学会躲避坏人侵害的本领

②中学生应学会用法律武器维护自身的合法权益

③中学生应敢于控告、检举坏人的不法行为，并积极寻求社会各方面的保护

④中学生要自强不息，抵制不良思想和不良诱惑

Summer is hot.