问题
选择题
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
答案
答案：A
句意: 农民经常使用化肥或化学物质来促进庄稼的生长。根据句意，化肥能提到庄稼的生长速度，则有“动作加快；速度提高；促进生长”之意，符合题意。advance指使进步，发展；前进（to go or move something forward, or to develop or improve something）；quicken 指加快速度、速率等promote多指促进发展、贸易、繁荣、谅解或增进友谊等。