Two kilograms too heavy for a sick man.A. is B. are C. was D. were

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(答案→)A. is
B. are
C. was
D. were
解析：考查时态及主谓一致。句意：两公斤对于一个病人来说太沉重了。结合语境可知本句描述的客观存在的状态，故用一般现在时态。主语为复数，故谓语动词用复数形式，选A。