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20.   According to the National Pasta Association, per-capita consumption of pasta in the United States, which has already been approaching 19 pounds a year, will achieve 30 pounds a year by the twenty-first century.

(A) According to the National Pasta Association, per-capita consumption of pasta in the United States, which has already been approaching 19 pounds a year, will achieve 30 pounds a year by the twenty-first century.

(B) Already approaching 19 pounds a year in the United States, the National Pasta Association predicts that per-capita consumption of pasta will reach 30 pounds a year by the twenty-first century.

(C) The National Pasta association predicts by the twenty-first century that per-capita consumption of pasta in the United States, which is already approaching 19 pounds a year, will reach 30 pounds a year.

(D) By the twenty-first century, the National Pasta Association predicts that per-capita consumption of pasta in the United States, having already approached 19 pounds a year, will reach 30 pounds a year.（E）

(E) According to the National Pasta Association, per-capita consumption of pasta in the United States is already approaching 19 pounds a year and will reach 30 pounds a year by the twenty-first century.

为什么A 不如 E?

为什么用用顺序时态的方式要不定从好,ETS有偏好么?

还是A的语法上有问题.

我觉得A在语法上挺完美,而且因为和原句一致,所以更能体现作者的意思

现在完成进行时表示一个持续性的动作,是吧,什么情况下用比较合适呢?

妹妹能不能举个实例体会一下呢,我觉得你说得有道理,不过还是有点糊涂