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1.We saw a lot of commercial buildings in Chicago. A condemned B razed C business D vacant 2.Salt has been a respected commodity for much of recorded time. A flavoring B preservative C remedy for illnes D article of trade 3.Pure feldspar is a colorless, transparent mineral, but impurities commonly make it opaque and colorful. A truly B rapidly C periodically D frequently 4.In 1925 Clarence Darrow competently opposed William Jennings Bryan at the renowned Scopes Monkey Trial. A adeptly B maliciously C privately D rashly 5.The Olympic Games attempt to transcend national interests and bring together the best international athletes in a spirit of friendly competition and peace. A debate B celebration C instruction D rivalry 答案：1.C commercial adj. 商业的, 贸易的 /homespun adj. 朴素的 /vacant adj. 未被占用的 /razed adj. 被夷为平地的 2.D commodity n. 商品;日用品 /remedy n. 补救;治疗法 /preservative n. 防腐剂/flavoring n. 调味品, 调料 3.D commonly adv. 通常地 /transparent adj. 透明的 /feldspar n. 【矿】长石 /opaque adj. 不透明的 /periodically adv. 定期地 4.A competently adv. 充分地 /adeptly adv. 熟练地 /maliciously adv. 不怀好意地 /rashly adv. 轻率地 | 
