Page 57 - Demo

%u6559%u5e2b%u53ef%u6309%u7167%u5c01%u9762%u6307%u793a%uff0c%u767b%u5165%u521d%u4e2d%u65b0%u4e16%u7d00%u5730%u7406%u5b78%u79d1%u7db2%u7ad9%uff0c%u7372%u53d6%u591a%u9805%u8f14%u52a9%u6559%u6750%uff1a%u5730%u5716%u8b80%u6cd5%uff08%u7b2c%u4e09%u7248%uff09%u6703%u63d0%u4f9b%u76f8%u95dc%u6559%u5b78%u7c21%u5831%uff0c%u65b9%u4fbf%u6559%u5e2b%u6559%u5b78%u3002%u7db2%u7ad9%u63d0%u4f9b%u591a%u6bb5%u5730%u5716%u95b1%u8b80%u6280%u80fd%u5f71%u7247(Map-reading Skills Video)%uff0c%u6559%u5e2b%u53ef%u6309%u7167%u8ab2%u6587%u5167%u5bb9%u8b93%u5b78%u751f%u89c0%u770b%u76f8%u95dc%u5f71%u7247%uff0c%u8b93%u5b78%u751f%u66f4%u5bb9%u6613%u638c%u63e1%u5404%u7a2e%u5730%u5716%u95b1%u8b80%u6280%u80fd%u3002%u6559%u5b78%u7c21%u5831%u5730%u5716%u95b1%u8b80%u6280%u80fd%u5f71%u72479