Glint was (a) favored material of prehistoric humans, (which) used it (to make) tools and weapons, because it would chip (into)

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问题 Glint was (a) favored material of prehistoric humans, (which) used it (to make) tools and weapons, because it would chip (into) shapes with sharp edges.

选项 A、a
B、which
C、to make
D、into

答案B

解析
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