【題目】Nearly 3,500 years ago, people chewed on leaves or drank a kind of tea made from leaves a special chemical to reduce body pains and fever.

【答案】possessing
【解析】句意：在大約3500年前，人們咀嚼一種含有特殊的化學(xué)物質(zhì)樹葉或飲用由這種樹葉制成的茶，來減少身體的疼痛和退燒。根據(jù)句意得知填寫“含有”。本句的謂語動詞是chewed or drank，而動詞possess和謂語之間沒有連詞。可以判斷出此處填非謂語動詞。樹葉和加工是主動關(guān)系，因此用現(xiàn)在分詞。填possessing。

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