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Most babies can take in a wide range of food easily.
A: bring
B: keep
C: digest
D: serve
B: keep
C: digest
D: serve
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解析：题干意为“大多数婴儿能消化的食物很多。” 句中划线词意为“吸收，消化”，C项digest意为“消化，整理，吸收”；例句：The baby is too small to digest meat.婴儿太小，吃肉不消化。A项意为“带来，引来”;B项意为“保持，遵守”; D项serve意为“服务，提供；”故选C。
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The high-speed trains can have a major impact on our lives.A:effort
B:problem
C:influence
D:concern
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