企源知识库

Supplies may ( ) according to seasonal availability but you'll always find a wide selection.
A、increase
B、fluctuate
C、improve
D、flatter
【正确答案】：B
【题目解析】：increase增加；fluctuate波动；improve改善，提高；flatter奉承。句意：供应可能随着季节的变化而波动，但你总能找到多种选择。