下列结合料稳定类适合作高速公路基层的有（）
A、二灰砂砾
B、水泥土
C、水泥砂砾
D、二灰土
参考答案：A, C
— The weatherman on the news said it might rain later on this afternoon.
— Well, I ____ take my umbrella along with me today. [ ]
A. can
B. may
C. could
D. must
物资生产：
