单选题 There is no alternative, the president must approve the bill if Congress passes it.
A. chance of agreement B. doubt
C. other choice D. mistake

【正确答案】 C

【答案解析】[解析] 名词辨析
alternative意为：二中择一，可供选择的办法(事物)；A．chance of agreement一致的机会； B．doubt怀疑，疑惑；C．other choice其他的选择；D．mistake错误，过失；因此答案为C。