英语笑话
because there is no gravity in the space, the pen and ball pen can't usedin the shuttle. the NASA organise a group to solve this problem. after spent
millions dollars they invented a new one. but the Russian only spend ten
cent. they use pencil. i wander that the pen and ball pen cannt use in the space?
is that true? juse a joke,you are too serious.
what ???????????
haha, I like it. generally, we always take a lot of time and energy to make the unnecessary things. may be know it.页:
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