E的结构表明该题是主语the rate比较,但该题不存在宾语有歧义的情况,不用补出was,was是多余的。此外,lz你想想the rate was 后面其实没有与前面的平行结构可以补出,不可能是The infant mortality rate is presently lower than the rate was lower ever before.
E的结构表明该题是主语the rate比较,但该题不存在宾语有歧义的情况,不用补出was,was是多余的。此外,lz你想想the rate was 后面其实没有与前面的平行结构可以补出,不可能是The infant mortality rate is presently lower than the rate was lower ever before.