题干
The farmers were more anxious for rain than the people in the city because they had more ______.
A：at length
B：at last
C：at stake
D：at most
答案(点此获取答案解析）
C
cC中，物质的含量A%和C%随温度的变化曲线如图所示，下列说法正确的是 （两个答案）（ ）