它用竹子或兽骨作为笔杆，把羊、兔或狼的毛捆扎成圆而尖的毛束作为笔头。The pen holder is ____ bamboo or bone, the ____ is made hairs from sheep, rabbits or wolves.
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用柔软的毛笔写方正的汉字，正符合了东方的哲学精神。Writing han zi with ____ mao bi represents ____.
中国文人用毛笔写字来磨砺意志。It is regarded as a method to ________ and nature, and widely used among scholars.
毛笔的诞生让写字成为一门艺术，即书法。Writing became an art called _____ with _____ mao bi.
常用的系统维护软件有( )。
A. 影子系统
B. 一键还原精灵
C. Windows PE
D. 雨过天晴保护系统
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