upload vt.↔download vt.

dirty adj.↔stainless adj.

dusk n.↔dawn n.

inwards adv.↔outwards adv.

temporary adj.↔permanent adj.

C组　形近词

later adv.后来；稍后↔latter n.后者

access n.进入；使用权↔assess vt.评估；评价

down adv.向下；在下面↔dawn n.开端，拂晓

exist vi.存在；生存↔exit n.出口

1.背诵经典　The specialist often updates his software，because he always downloads something new into his database every day.

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2.背诵经典　One of my colleagues assisted an official to escape the building from the fire exit.

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3.背诵经典　The instructor donated some of his organs to the people who needed them.

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