题目:
Over the past ten years cultivated sunflowers have become a major commercial crop, second only to soybeans as a source of vegetable oil.
选项:
A、second only to soybeans as a source of vegetable oil
B、second in importance to soybeans only as a source of vegetable oil
C、being second in importance only to soybeans as a source of vegetable oil
D、which, as a source of vegetable oil, is only second to soybeans
E、as a source of vegetable oil only second to soybeans
答案:
A