Two kilograms ______ too heavy for a sick man.
A．is B．a(chǎn)re C．was D．were
A
考查時(shí)態(tài)及主謂一致。句意：兩公斤對(duì)于一個(gè)病人來說太沉重了。結(jié)合語境可知本句描述的客觀存在的狀態(tài)，故用一般現(xiàn)在時(shí)態(tài)。主語為復(fù)數(shù)，故謂語動(dòng)詞用復(fù)數(shù)形式，選A。
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