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问题: 有一事想求?

2。obama, made ___ history by becoming the first african-american president in ___ nation's history.
a./, the b.a; the c. the . / d. the, a 为什么选A,B不行吗,

解答:

作为学科,history是抽象名词,不带冠词.但当其前面有修饰词时,抽象名词变成了具体名词,就要(或可以)用冠词了.所以正确答案为A.