下列古诗中，描写生物生长发育的是（  ）

0.78×101＝____

1.25×0.4×8×2.5＝____

64×4.5＋36×4.5＝____

13÷0.4÷2.5＝____

7.28 ＋3.2÷0.4＝____

0.75×18 ÷0.15＝____

Pedro: Hi, Lily. When do you start class in the morning?

Lily: Usually at 8:00.

Pedro: It's early. We start class at 9:00 in Spain.

Lily: When do you usually eat dinner, Pedro?

Pedro: At 9:30 or 10:00 p.m.

Lily: Wow! That's too late. I always go to bed at 9:30. What do you do on the weekend?

Pedro: I often play sports with my friends. Sometimes I go shopping with my mum.

Lily: Sounds interesting. I usually clean my room. Sometimes I cook for my family.

李明同学在用电火花计时器做“测定匀变速直线运动的加速度”实验．