读短文，回答问题。

May: Good morning! Can I help you?

Lucy: Yes. I want some pencils and pens.

May: We have many here. Which one do you like?

Lucy: That red one, please.

May: Here you are.

Lucy: Thank you. How much is it?

May: It's cheap. It's 1 yuan.

340×700

=340×____×100

=____×____

=____

张娟同学想探究叶绿素的形成与光照的关系，她做了如下实验：在黑暗条件下培育出韭菜幼苗（呈黄白色），将其分成两等分，分别放入盛有少量水的甲乙两烧杯中，然后将甲烧杯罩上大号的透明塑料袋，乙烧杯罩上大号的黑塑料袋，同时放在阳光下，观察记录颜色的变化．

小刚因考试成绩不理想很伤心，自习课上在教室里大哭起来，还撕坏了小红的课本。