—I had a good holiday at my uncle’s. — ______.

A．Oh, that’s very nice of you

B．Congratulations

C．Oh, I’m glad to hear that

D．It’s a pleasure

在人行道上应尽量避免使用拉线。如需要安装拉线，拉线及地锚位于人行道或人车经常通行的地点，应在离地面高2.0m以下的部位用塑料管或毛竹筒包封.在塑料管或毛竹筒外面并用红白相间色作告警标志。