你想让同学看看你的新铅笔盒,可以说:
A:Look at my new pencil
B:This is a new pencil case.
C:What's that?
铁丝在空气中不能燃烧,因为氧气在空气中的体积分数约为____,而铁丝在氧气中燃烧的现象却是____ ;实验时,瓶中预先留少量水或沙是为了____,待火柴棒快燃尽时才将铁丝伸入瓶内是为了____ 。
改错。
My sister have long hair and big eyes.
____
Goldilocks ____ (注意到) a little house, so she hurried towards it.