已知平面π：2x+y+z=3和直线L：
参考答案：
解析：解得L与π的交点坐标为(1，-1，2)
把0.763737…精确到十分位是______．
—Do you like music?
—Yes, I do. _____ it's relaxing. [ ]
A. But
B. Because
C. So
D. But
