—个圆锥形的容器，高12厘米，里面装满了水， 然后把水全部倒入和它等底的圆柱容器里，水面高（ ）厘米。
4
— My car has broken down. Could you please give me a ride tomorrow?
— I'm sorry I _____. I'm leaving for London tonight. [ ]
A. can't
B. mustn't
C. couldn't
D. shouldn't
应该怎样评价布朗对中国农业的悲观预测？
