How do archaeologists know that Neolithic men relied considerably on flint?
A.They have found many fingerprints on tools made of it.
B.They have found holes that were dug with it.
C.They have discovered many tools made of it.
D.They have discovered it beside relics of Neolithic men.
第7题
机动车仪表板上(如图所示)亮表示什么?
A. 迎面出风
B. 空气外循环
C. 风窗玻璃除霜
D. 空气内循环
第8题
机动车仪表板上(如图所示)亮表示什么?
A. 侧面出风
B. 空气外循环
C. 迎面出风
D. 空气内循环
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