As it was his first time to visit the science museum, the boy seemed about everything ther

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A. anxious
(答案→)B. curious
C. particular
D. frightened
解析：考查固定词组。Be anxious about…对…感到焦虑；be curious about…对…感到好奇；be particular about对…挑剔；be frightened about对…感到害怕；句意：因为这是他第一次参观博物馆，这个男孩似乎对里面的一切很好奇。故B正确。