罗马帝国时期法律的最重要渊源是()
A.皇帝敕令
B.元老院决议
C.民众大会决议
D.法学家对法律问题的解答
参考答案:A
青少年所戴的近视眼镜是______透镜,它对光线能起到______作用.
We'd better grow the plant in a ________ plastic box so that the children can see the roots growing.
A.safe
B.square
C.transparent
D.thick