填空
缅甸                                        a 河 内          ①下龙湾
泰国                                        b 内比都          ②吴哥窟
越南                                        c 金 边          ③仰光大金塔
印度尼西亚                                  d 雅加达          ④海湾
柬埔寨                                      e 曼 谷          ⑤婆罗浮屠