四六级考试

【单选题】 The United States entered the war against Japan ______.
A．because Japan declared war
B．because Japan was an ally of Germany
C．after Japan launched the Pearl Harbor attack
D．after peaceful efforts had failed

网考网参考答案：C
网考网解析：
[解析] 最后一段倒数第二句“In December， 1941，Japan launched the unprovoked attack on the United States at Pearl Harbor.”表明1941年 12月，日本对美国发动了无缘无故的战争，所以应该选C)after Japan launched the pearl harbor attack．A)，B)和D)是不符合原文的。 查看试题解析出处>>