Farmers often employ fertilizer or other special chemicals to _____the growth of crops, as is well-known.

  A. accelerate     B. advance    C. quicken   D. promote

A


解析:

句意: 農(nóng)民經(jīng)常使用化肥或化學(xué)物質(zhì)來促進莊稼的生長。根據(jù)句意，化肥能提到莊稼的生長速度，則有“動作加快；速度提高；促進生長”之意，符合題意。advance指使進步，發(fā)展；前進（to go or move something forward, or to develop or improve something）；quicken 指加快速度、速率等promote多指促進發(fā)展、貿(mào)易、繁榮、諒解或增進友誼等。

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Merrigan, a former college professor, is making stops at universities across the country in hopes of encouraging more students to think about careers in agriculture. Aside from trying to stop the graying of America’s farmers, her work is made tougher by a recent blog posting that put agriculture at No. 1 on a list of “useless” college degrees. Top federal agriculture officials are talking about the posting, and it has the attention of agricultural organizations across the country.
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