RW 自信ないです! 大問1 1.b 2.c 3.a 4.c 5.b 6.c 7.d 8.a 9.c 大問2 1.e 2.c 3.a 4.f 5.b 大問3 1. How to define the weight of a kilogram was decided be votes. 2. (1)a (2)c 大問4 I disagree with this decision. By allowing students to use their own personal devices in classrooms, students will be able to search whatever they didn’t understand during class. Also, they will be able to contact their family or friends incase of an emergency. Thus, I think high schools should allow students to use their own personal devices in classrooms.