答案：D分析：as far as 结构，在托福中是优选项；A，B，C结

答案：D分析：as far as 结构，在托福中是优选项；A，B，C结构错误， 可以用： It is known that dolphins have no sense of smell 。

Kết quả (Anh) 1:

Answer: d analysis: as far as structure in tuofuzhong is preferred; A,B,C structure errors, you can use: It is known that dolphins have no sense of smell.

Kết quả (Anh) 2:

Answer: D analysis: as far as structure is in TOEFL preferences; A, B, C configuration error, you can use: It is known that dolphins have no sense of smell.

Kết quả (Anh) 3:

Answer: D analysis: far as as structure, in the TOEFL is the best option; A, B, C structural errors, can be used: is known that dolphins It have no sense of smell.