语法与词汇 13.Tom could hardly______his excitement as he knew that he had made a real discovery.
【正确答案】 A
【答案解析】本题空格处是说无法隐藏他的兴奋之情。A项“conceal隐藏”符合题意。如：He concealed the sweets in his pocket．(他把糖果藏在口袋里。)其他三项“reveal揭示；show显示；discover发现”都不正确。