<?xml version="1.0"?>
<shipTo country="US">
<name><strong>Alice Smith</strong></name>
<street>123 Maple Street</street>
<city><hi>Mill Valley</hi></city>
<state>CA</state>
<zip>90952</zip>
</shipTo>
要选择的 xpath 表达式是 "123 Maple Street, Mill Valley, CA, 90952"
什么?